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     xmlns:media="http://search.yahoo.com/mrss/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:pbscontent="http://www.pbs.org/rss/pbscontent/" xmlns:pbsvideo="http://www.pbs.org/rss/pbsvideo/" ><channel><title>NOVA | WNET Video</title><description>NOVA RSS feed for WNET programming.</description><link>http://watch.thirteen.org</link><language>en-us</language><generator>http://watch.thirteen.org</generator><lastBuildDate>Fri, 10 Feb 2012 02:23:41 -0500</lastBuildDate><pubDate>Fri, 10 Feb 2012 02:23:41 -0500</pubDate><item><title>NOVA | Separating Twins</title><link>http://watch.thirteen.org/video/2193535054/</link><description>Follow the story of twin girls joined at the head, as surgeons prepare to separate them.</description><guid>http://watch.thirteen.org/video/2193535054/</guid><pubDate>02/09/2012</pubDate><media:description>Follow the story of twin girls joined at the head, as surgeons prepare to separate them.</media:description><media:content medium="video" duration="3182085" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/44/941/nova-003908-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2193535054/" /><category domain="PBS/taxonomy/topic">Health Care &amp; Illnesses</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Health Care &amp; Illnesses</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Biography &amp; Profiles</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Biography &amp; Profiles</media:category><pbsvideo:content_type>Episode</pbsvideo:content_type></item><item><title>NOVA | Separating Twins Preview</title><link>http://watch.thirteen.org/video/2183490958/</link><description>Premiering Feb. 8, 2012 on PBS</description><guid>http://watch.thirteen.org/video/2183490958/</guid><pubDate>01/04/2012</pubDate><media:description>Premiering Winter 2012 on PBS</media:description><media:content medium="video" duration="30101" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/35/348/nova-003908-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2183490958/" /><category domain="PBS/taxonomy/topic">Health Care &amp; Illnesses</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Health Care &amp; Illnesses</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Drinking &quot;Mastodon Juice&quot;</title><link>http://watch.thirteen.org/video/2191745251/</link><description>Forget Happy Hour. These scientists drink water trapped in Ice Age bones.</description><guid>http://watch.thirteen.org/video/2191745251/</guid><pubDate>01/31/2012</pubDate><media:description>Forget Happy Hour. These scientists drink water trapped in Ice Age bones.</media:description><media:content medium="video" duration="59712" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/43/217/drinking-mastodon-juice-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2191745251/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Biology &amp; Chemistry</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Biology &amp; Chemistry</media:category><category domain="PBS/taxonomy/topic">Earth</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Earth</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | Mystery of a Masterpiece Preview</title><link>http://watch.thirteen.org/video/2183490953/</link><description>Premiering January 25, 2012 at 9pm on PBS</description><guid>http://watch.thirteen.org/video/2183490953/</guid><pubDate>01/05/2012</pubDate><media:description>Premiering January 25, 2012 at 9pm on PBS</media:description><media:content medium="video" duration="30101" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/35/348/nova-003904-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2183490953/" /><category domain="PBS/taxonomy/topic">Arts &amp; Entertainment</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Arts &amp; Entertainment</media:category><category domain="PBS/taxonomy/topic">History</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">History</media:category><category domain="PBS/taxonomy/topic">Renaissance</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Renaissance</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Mystery of a Masterpiece</title><link>http://watch.thirteen.org/video/2189483449/</link><description>Experts investigate whether a portrait sold for about $20,000 in 1998 is a lost Leonardo.</description><guid>http://watch.thirteen.org/video/2189483449/</guid><pubDate>01/26/2012</pubDate><media:description>Experts investigate whether a portrait sold for about $20,000 in 1998 is a lost Leonardo.</media:description><media:content medium="video" duration="3172565" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/41/56/nova-003904-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2189483449/" /><category domain="PBS/taxonomy/topic">Arts &amp; Entertainment</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Arts &amp; Entertainment</media:category><category domain="PBS/taxonomy/topic">Fine Arts</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Fine Arts</media:category><category domain="PBS/taxonomy/topic">History</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">History</media:category><category domain="PBS/taxonomy/topic">Renaissance</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Renaissance</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><pbsvideo:content_type>Episode</pbsvideo:content_type></item><item><title>NOVA | 3D Spies of WWII</title><link>http://watch.thirteen.org/video/2187853726/</link><description>With 3D graphics, NOVA reveals how the Allies used special aerial photos to deal a dire blow to the Nazi rocket program.</description><guid>http://watch.thirteen.org/video/2187853726/</guid><pubDate>01/19/2012</pubDate><media:description>The Allies used special aerial photos to deal a dire blow to the Nazi rocket program.</media:description><media:content medium="video" duration="3187240" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/39/512/nova-003903-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2187853726/" /><category domain="PBS/taxonomy/topic">History</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">History</media:category><category domain="PBS/taxonomy/topic">War &amp; Conflict</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">War &amp; Conflict</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Technology</media:category><category domain="PBS/taxonomy/topic">Transportation &amp; Infrastructure</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Transportation &amp; Infrastructure</media:category><pbsvideo:content_type>Episode</pbsvideo:content_type></item><item><title>NOVA | 3D Spies of WWII Preview</title><link>http://watch.thirteen.org/video/2175892459/</link><description>Premiering January 18, 2012 at 9 pm on PBS</description><guid>http://watch.thirteen.org/video/2175892459/</guid><pubDate>12/13/2011</pubDate><media:description>Premiering January 18, 2012 at 9 pm on PBS</media:description><media:content medium="video" duration="30066" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/28/95/nova-003903-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2175892459/" /><category domain="PBS/taxonomy/topic">History</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">History</media:category><category domain="PBS/taxonomy/topic">War &amp; Conflict</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">War &amp; Conflict</media:category><category domain="PBS/taxonomy/topic">News &amp; Public Affairs</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">News &amp; Public Affairs</media:category><category domain="PBS/taxonomy/topic">National Security</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">National Security</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Sneak Peak: 3D Spies of WWII</title><link>http://watch.thirteen.org/video/2186608380/</link><description>Premiering January 18, 2012 at 9pm on PBS</description><guid>http://watch.thirteen.org/video/2186608380/</guid><pubDate>01/13/2012</pubDate><media:description>Premiering January 18, 2012 at 9pm on PBS</media:description><media:content medium="video" duration="316117" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/38/320/sneak-peak-3d-spies-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2186608380/" /><category domain="PBS/taxonomy/topic">History</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">History</media:category><category domain="PBS/taxonomy/topic">War &amp; Conflict</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">War &amp; Conflict</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Technology</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | Bombing Hitler&#39;s Dams</title><link>http://watch.thirteen.org/video/2184994583/</link><description>Can experts recreate an Allied attack from WWII and destroy dams with a bouncing bomb?</description><guid>http://watch.thirteen.org/video/2184994583/</guid><pubDate>01/12/2012</pubDate><media:description>Can experts recreate an Allied attack from WWII and destroy dams with a bouncing bomb?</media:description><media:content medium="video" duration="6772239" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/36/792/nova-003902-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2184994583/" /><category domain="PBS/taxonomy/topic">History</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">History</media:category><category domain="PBS/taxonomy/topic">War &amp; Conflict</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">War &amp; Conflict</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Technology</media:category><category domain="PBS/taxonomy/topic">Transportation &amp; Infrastructure</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Transportation &amp; Infrastructure</media:category><pbsvideo:content_type>Episode</pbsvideo:content_type></item><item><title>NOVA | Bombing Hitler&#39;s Dams Preview</title><link>http://watch.thirteen.org/video/2175888290/</link><description>Premiering January 11, 2012 at 9 pm on PBS</description><guid>http://watch.thirteen.org/video/2175888290/</guid><pubDate>12/13/2011</pubDate><media:description>Premiering January 11, 2012 at 9 pm on PBS</media:description><media:content medium="video" duration="30144" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/28/91/nova-003902-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2175888290/" /><category domain="PBS/taxonomy/topic">History</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">History</media:category><category domain="PBS/taxonomy/topic">War &amp; Conflict</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">War &amp; Conflict</media:category><category domain="PBS/taxonomy/topic">News &amp; Public Affairs</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">News &amp; Public Affairs</media:category><category domain="PBS/taxonomy/topic">National Security</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">National Security</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Hunting the Elements Promo</title><link>http://watch.thirteen.org/video/2185064316/</link><description>Premiering Spring 2012 on PBS</description><guid>http://watch.thirteen.org/video/2185064316/</guid><pubDate>01/09/2012</pubDate><media:description>Premiering Spring 2012 on PBS</media:description><media:content medium="video" duration="250560" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/36/860/nova-003906-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2185064316/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Biology &amp; Chemistry</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Biology &amp; Chemistry</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Deadliest Volcanoes Preview</title><link>http://watch.thirteen.org/video/2175888293/</link><description>Premiering January 4, 2012 at 9 pm on PBS</description><guid>http://watch.thirteen.org/video/2175888293/</guid><pubDate>12/13/2011</pubDate><media:description>Premiering January 4, 2012 at 9 pm on PBS</media:description><media:content medium="video" duration="30066" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/28/91/nova-003901-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2175888293/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Earth</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Earth</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Deadliest Volcanoes</title><link>http://watch.thirteen.org/video/2182459039/</link><description>How can we best prepare for the most lethal volcanic eruptions?</description><guid>http://watch.thirteen.org/video/2182459039/</guid><pubDate>01/05/2012</pubDate><media:description>How can we best prepare for the most lethal volcanic eruptions?</media:description><media:content medium="video" duration="3165994" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/34/364/nova-003901-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2182459039/" /><category domain="PBS/taxonomy/topic">News &amp; Public Affairs</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">News &amp; Public Affairs</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Earth</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Earth</media:category><category domain="PBS/taxonomy/topic">Weather &amp; Natural Disasters</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Weather &amp; Natural Disasters</media:category><pbsvideo:content_type>Episode</pbsvideo:content_type></item><item><title>NOVA | Ice Age Death Trap Preview</title><link>http://watch.thirteen.org/video/2183288240/</link><description>Premiering Winter 2012 on PBS</description><guid>http://watch.thirteen.org/video/2183288240/</guid><pubDate>01/04/2012</pubDate><media:description>Premiering Winter 2012 on PBS</media:description><media:content medium="video" duration="30144" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/35/150/nova-003905-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2183288240/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Biology &amp; Chemistry</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Biology &amp; Chemistry</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Deadliest Earthquakes Preview</title><link>http://watch.thirteen.org/video/1690329015/</link><description>Big quakes are inevitable, but can we prevent their devastation?</description><guid>http://watch.thirteen.org/video/1690329015/</guid><pubDate>12/10/2010</pubDate><media:description>Watch January 4, 2012 on PBS</media:description><media:content medium="video" duration="30000" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/589/24/nova-003801-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/1690329015/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Sneak Peak: Deadliest Volcanoes</title><link>http://watch.thirteen.org/video/2177414412/</link><description>Could tiny particles called muons allow us to see deep inside volcanoes?</description><guid>http://watch.thirteen.org/video/2177414412/</guid><pubDate>12/16/2011</pubDate><media:description>Could tiny particles called muons allow us to see deep inside volcanoes?</media:description><media:content medium="video" duration="382200" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/29/558/sneak-peak-volcanoes-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2177414412/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Earth</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Earth</media:category><pbsvideo:content_type>Clip</pbsvideo:content_type></item><item><title>NOVA | Mystery of the Megavolcano - Preview</title><link>http://watch.thirteen.org/video/2173743445/</link><description>Watch as NOVA pieces together clues about a volcanic cataclysm and probes questions about human evolution and Earth&#39;s fragile ecosystems. 12/14/2011</description><guid>http://watch.thirteen.org/video/2173743445/</guid><pubDate>12/06/2011</pubDate><media:description>Airs Wednesday, December 14, 2011 at 10:00 p.m. ET/PT. Check your local listings.</media:description><media:content medium="video" duration="30696" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_Promotions/26/45/NOVA-3312-megavolcano-COVE-THUMB.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2173743445/" /><category domain="PBS/taxonomy/topic">History</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">History</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Earth</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Earth</media:category><category domain="PBS/taxonomy/topic">Environment</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Environment</media:category><category domain="PBS/taxonomy/topic">Weather &amp; Natural Disasters</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Weather &amp; Natural Disasters</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Light My Fire</title><link>http://watch.thirteen.org/video/2175892485/</link><description>What do you get when you introduce a chunk of Sodium to a Bunsen burner? Sizzling romance.</description><guid>http://watch.thirteen.org/video/2175892485/</guid><pubDate>12/13/2011</pubDate><media:description>What do you get when you introduce a chunk of Sodium to a Bunsen burner? Sizzling romance.</media:description><media:content medium="video" duration="78592" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/28/96/light-my-fire-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2175892485/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Biology &amp; Chemistry</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Biology &amp; Chemistry</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | Darwin&#39;s Darkest Hour - Preview</title><link>http://watch.thirteen.org/video/2172993848/</link><description>Witness Charles Darwin&#39;s greatest personal crisis: the anguishing decision over whether to &quot;go public&quot; with his theory of evolution. 12/7/2011</description><guid>http://watch.thirteen.org/video/2172993848/</guid><pubDate>12/02/2011</pubDate><media:description>Airs Wednesday, December 7, 2011 at 9:00 p.m. ET/PT. Check your local listings.</media:description><media:content medium="video" duration="30720" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_Promotions/25/337/NOVA-3605-darwin-COVE-THUMb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2172993848/" /><category domain="PBS/taxonomy/topic">History</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">History</media:category><category domain="PBS/taxonomy/topic">Modern</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Modern</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Biography &amp; Profiles</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Biography &amp; Profiles</media:category><category domain="PBS/taxonomy/topic">Biology &amp; Chemistry</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Biology &amp; Chemistry</media:category><category domain="PBS/taxonomy/topic">Earth</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Earth</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | The Fabric of the Cosmos: Universe or Multiverse?</title><link>http://watch.thirteen.org/video/2168433605/</link><description>Is our universe unique, or could it be just one in an endless &quot;multiverse&quot;?</description><guid>http://watch.thirteen.org/video/2168433605/</guid><pubDate>11/24/2011</pubDate><media:description>Is our universe unique, or could it be just one in an endless &quot;multiverse&quot;?</media:description><media:content medium="video" duration="3171567" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/20/1003/fabric-multiverse-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2168433605/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Episode</pbsvideo:content_type></item><item><title>NOVA | The Elegant Universe, &quot;Welcome to the 11th Dimension&quot; - Preview</title><link>http://watch.thirteen.org/video/2168310605/</link><description>Scientists revolutionized string theory by successfully uniting the five different versions into a single theory that is cryptically named &quot;M-theory,&quot; a development that required a total of 11 dimensions. 11/23/2011</description><guid>http://watch.thirteen.org/video/2168310605/</guid><pubDate>11/17/2011</pubDate><media:description>Airs Wednesday, November 23, 2011 at 10:00 p.m. ET/PT. Check your local listings.</media:description><media:content medium="video" duration="30000" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_Promotions/20/883/NOVA-3014-dimension-COVE-THUMB.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2168310605/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Astronomy</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Astronomy</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Sneak Peak: Universe or Multiverse?</title><link>http://watch.thirteen.org/video/2168401190/</link><description>We may live in an expanding sea of multiplying universes: the multiverse.</description><guid>http://watch.thirteen.org/video/2168401190/</guid><pubDate>11/21/2011</pubDate><media:description>We may live in an expanding sea of multiplying universes: the multiverse.</media:description><media:content medium="video" duration="249365" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/20/972/sneak-peak-multiverse-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2168401190/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | The Elegant Universe, &quot;The String&#39;s the Thing&quot; - Preview</title><link>http://watch.thirteen.org/video/2165376987/</link><description>Greene describes the serendipitous steps that led from a forgotten 200-year-old mathematical formula to the first glimmerings of strings - quivering strands of energy. 11/16/2011</description><guid>http://watch.thirteen.org/video/2165376987/</guid><pubDate>11/10/2011</pubDate><media:description>Airs Wednesday, November 16, 2011 at 10:00 p.m. ET/PT. Check your local listings.</media:description><media:content medium="video" duration="30743" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_Promotions/18/66/NOVA-3013-String-COVE-THUMB.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2165376987/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Astronomy</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Astronomy</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | The Fabric of the Cosmos: Quantum Leap</title><link>http://watch.thirteen.org/video/2167398185/</link><description>Take a wild ride into the quantum realm, where even the impossible seems possible.</description><guid>http://watch.thirteen.org/video/2167398185/</guid><pubDate>11/17/2011</pubDate><media:description>Take a wild ride into the quantum realm, where even the impossible seems possible.</media:description><media:content medium="video" duration="3172031" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/19/1016/nova-003818-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2167398185/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Episode</pbsvideo:content_type></item><item><title>NOVA | The Amazing Atomic Clock</title><link>http://watch.thirteen.org/video/2167682634/</link><description>Dr. Steve Jefferts of the National Institute of Standards and Technology in Boulder, Colorado is an expert on how we measure time. In fact, he uses one of the world&#39;s most accurate atomic clocks to calibrate time in the United States. But why do we need such accuracy? Learn why atomic clocks are so important in our everyday lives.</description><guid>http://watch.thirteen.org/video/2167682634/</guid><pubDate>11/16/2011</pubDate><media:description>What are atomic clocks? And why do we need them?</media:description><media:content medium="video" duration="239786" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/20/270/atomic-clock-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2167682634/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | The Elegant Universe, &quot;Einstein&#39;s Dream&quot; - Preview</title><link>http://watch.thirteen.org/video/2165297169/</link><description>Albert Einstein dreamed of finding a single theory that would embrace all of nature&#39;s laws, but he came up empty-handed. The conflict between general relativity and quantum mechanics has stymied all who&#39;ve followed. That is, until the discovery of string theory. 11/9/2011</description><guid>http://watch.thirteen.org/video/2165297169/</guid><pubDate>11/10/2011</pubDate><media:description>Airs Wednesday, November 9, 2011 at 10:00 p.m. ET/PT. Check your local listings.</media:description><media:content medium="video" duration="30696" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_Promotions/17/1013/NOVA-3012-einstein-COVE-THUMB.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2165297169/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | The Fabric of the Cosmos: The Illusion of Time</title><link>http://watch.thirteen.org/video/2164065493/</link><description>It defines our lives, but what is time really? Have a look into its true nature.</description><guid>http://watch.thirteen.org/video/2164065493/</guid><pubDate>11/10/2011</pubDate><media:description>It defines our lives, but what is time really? Have a look into its true nature.</media:description><media:content medium="video" duration="3172031" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/16/834/fabric-time-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2164065493/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Episode</pbsvideo:content_type></item><item><title>NOVA | The Fabric of the Cosmos Preview</title><link>http://watch.thirteen.org/video/2088252846/</link><description>Acclaimed physicist Brian Greene reveals a mind-boggling reality beneath the surface of our everyday world. Series premieres November 2, 2011 at 9pm on PBS</description><guid>http://watch.thirteen.org/video/2088252846/</guid><pubDate>08/10/2011</pubDate><media:description>Series premieres November 2, 2011 at 9pm on PBS</media:description><media:content medium="video" duration="188400" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/968/526/fabric-overview-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2088252846/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | The Fabric of the Cosmos: What Is Space?</title><link>http://watch.thirteen.org/video/2163057527/</link><description>Surprising clues indicate that space is very much something and not nothing.</description><guid>http://watch.thirteen.org/video/2163057527/</guid><pubDate>11/03/2011</pubDate><media:description>Surprising clues indicate that space is very much something and not nothing.</media:description><media:content medium="video" duration="3172426" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/15/873/fabric-space-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2163057527/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Episode</pbsvideo:content_type></item><item><title>NOVA | NOVA&#39;s The Fabric of the Cosmos Goes to NY Comic Con</title><link>http://watch.thirteen.org/video/2159925160/</link><description>At the New York Comic Con convention, physicist and author Brian Greene discusses NOVA&#39;s The Fabric of the Cosmos (airing on PBS beginning Nov. 2, 2011).</description><guid>http://watch.thirteen.org/video/2159925160/</guid><pubDate>10/25/2011</pubDate><media:description>Physicist Brian Greene discusses NOVA&#39;s The Fabric of the Cosmos at NY Comic Con.</media:description><media:content medium="video" duration="96107" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_General_Audience/12/886/NOVA-FabricCosmos-ComicCon-small.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2159925160/" /><category domain="PBS/taxonomy/topic">Culture &amp; Society</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Culture &amp; Society</media:category><category domain="PBS/taxonomy/topic">Antiques &amp; Collectibles</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Antiques &amp; Collectibles</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Astronomy</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Astronomy</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | Quantum Confidential</title><link>http://watch.thirteen.org/video/2163191974/</link><description>If you were a spy, how could you ensure that an encrypted message got safely to your allies? Send it using entangled particles! Here, watch how a technique called quantum cryptography could save a state secret from falling into enemy hands.</description><guid>http://watch.thirteen.org/video/2163191974/</guid><pubDate>11/01/2011</pubDate><media:description>Learn how to send top-secret messages using quantum mechanics.</media:description><media:content medium="video" duration="138581" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/15/1005/quantum-confidential-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2163191974/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | Sneak Peak: What Is Space?</title><link>http://watch.thirteen.org/video/2160652230/</link><description>Learn how Peter Higgs&#39; ideas about matter transformed our understanding of space.</description><guid>http://watch.thirteen.org/video/2160652230/</guid><pubDate>10/26/2011</pubDate><media:description>Learn how Peter Higgs&#39; ideas about matter transformed our understanding of space.</media:description><media:content medium="video" duration="291733" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/13/572/sneak-peak-what-is-space-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2160652230/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | The Fabric of the Cosmos: What Is Space? Preview</title><link>http://watch.thirteen.org/video/2159793757/</link><description>The Fabric of the Cosmos: What Is Space? Premiering November 2, 2011 on PBS.</description><guid>http://watch.thirteen.org/video/2159793757/</guid><pubDate>10/25/2011</pubDate><media:description>The Fabric of the Cosmos: What Is Space? Premiering November 2, 2011 on PBS.</media:description><media:content medium="video" duration="30101" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/12/758/fabric-space-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2159793757/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | The Fabric of the Cosmos: The Illusion of Time Preview</title><link>http://watch.thirteen.org/video/2159793760/</link><description>The Fabric of the Cosmos: The Illusion of Time. Premiering November 9, 2011 on PBS.</description><guid>http://watch.thirteen.org/video/2159793760/</guid><pubDate>10/25/2011</pubDate><media:description>The Fabric of the Cosmos: The Illusion of Time. Premiering November 9, 2011 on PBS.</media:description><media:content medium="video" duration="30101" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/12/758/fabric-time-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2159793760/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | The Fabric of the Cosmos: Universe or Multiverse? Preview</title><link>http://watch.thirteen.org/video/2159793761/</link><description>The Fabric of the Cosmos: Universe or Multiverse? Premiering November 23, 2011 on PBS.</description><guid>http://watch.thirteen.org/video/2159793761/</guid><pubDate>10/25/2011</pubDate><media:description>The Fabric of the Cosmos: Universe or Multiverse? Premiering November 23, 2011 on PBS.</media:description><media:content medium="video" duration="30101" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/12/758/fabric-multiverse-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2159793761/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | The Fabric of the Cosmos: Quantum Leap Preview</title><link>http://watch.thirteen.org/video/2159658375/</link><description>The Fabric of the Cosmos: Quantum Leap. Premiering November 16, 2011 on PBS.</description><guid>http://watch.thirteen.org/video/2159658375/</guid><pubDate>10/25/2011</pubDate><media:description>The Fabric of the Cosmos: Quantum Leap. Premiering November 16, 2011 on PBS.</media:description><media:content medium="video" duration="30066" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/12/626/nova-003818-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2159658375/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | The Making of the</title><link>http://watch.thirteen.org/video/2159428943/</link><description>Take a behind-the-scenes look at this animated scene from &quot;The Fabric of the Cosmos.&quot;</description><guid>http://watch.thirteen.org/video/2159428943/</guid><pubDate>10/24/2011</pubDate><media:description>Take a behind-the-scenes look at this animated scene from &quot;The Fabric of the Cosmos.&quot;</media:description><media:content medium="video" duration="315157" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/12/402/making-quantum-club-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2159428943/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | Finding Life Beyond Earth</title><link>http://watch.thirteen.org/video/2157407032/</link><description>We are on the verge of answering one of the greatest questions in history: Are we alone?</description><guid>http://watch.thirteen.org/video/2157407032/</guid><pubDate>10/21/2011</pubDate><media:description>We are on the verge of answering one of the greatest questions in history: Are we alone?</media:description><media:content medium="video" duration="6137521" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/10/475/finding-life-beyond-earth-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2157407032/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Astronomy</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Astronomy</media:category><pbsvideo:content_type>Episode</pbsvideo:content_type></item><item><title>NOVA | Finding Life Beyond Earth Preview</title><link>http://watch.thirteen.org/video/2119575014/</link><description>Scientists are on the verge of answering one of the greatest questions in history: Are we alone? Airs October 19, 2011 on PBS</description><guid>http://watch.thirteen.org/video/2119575014/</guid><pubDate>09/06/2011</pubDate><media:description>Airs October 19, 2011 on PBS</media:description><media:content medium="video" duration="30066" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/998/394/finding-life-beyond-earth-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2119575014/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Astronomy</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Astronomy</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | The Mars Rover, &quot;Curiosity&quot;</title><link>http://watch.thirteen.org/video/2168310603/</link><description>Scientists want to know if methane gas on Mars is a product of biological processes or a result of geologic activity. To find out, NASA is sending a robotic rover called Curiosity to Mars. This video clip from NOVA&#39;s program Finding Life Beyond Earth explores the questions that drive the scientists and the implications of possible findings.</description><guid>http://watch.thirteen.org/video/2168310603/</guid><pubDate>11/17/2011</pubDate><media:description>NASA is sending a robotic rover called &quot;Curiosity&quot; to find out if there is life on Mars.</media:description><media:content medium="video" duration="265427" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/20/883/mars-curiosity-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2168310603/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Technology</media:category><category domain="PBS/taxonomy/topic">Communications &amp; Media</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Communications &amp; Media</media:category><category domain="PBS/taxonomy/topic">Space</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Space</media:category><pbsvideo:content_type>Clip</pbsvideo:content_type></item><item><title>NOVA | Finding Earth-Like Planets</title><link>http://watch.thirteen.org/video/2151787777/</link><description>Learn how to find signs of extraterrestrial life in our galaxy without leaving home.</description><guid>http://watch.thirteen.org/video/2151787777/</guid><pubDate>10/12/2011</pubDate><media:description>Learn how to find signs of extraterrestrial life in our galaxy without leaving home.</media:description><media:content medium="video" duration="246890" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/5/108/nova-007424-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2151787777/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Astronomy</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Astronomy</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | An Interview With Steve Jobs</title><link>http://watch.thirteen.org/video/2151510911/</link><description>Watch a rare interview with the late Apple visionary, conducted in 1990.</description><guid>http://watch.thirteen.org/video/2151510911/</guid><pubDate>10/12/2011</pubDate><media:description>Watch a rare interview with the late Apple visionary, conducted in 1990.</media:description><media:content medium="video" duration="3011221" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/4/861/stevejobs-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2151510911/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Technology</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | Heisenberg Humor</title><link>http://watch.thirteen.org/video/18121247/</link><description>Quantum mechanics is nothing to laugh at. Well, sometimes it is.</description><guid>http://watch.thirteen.org/video/18121247/</guid><pubDate>10/05/2011</pubDate><media:description>Quantum mechanics is nothing to laugh at. Well, sometimes it is.</media:description><media:content medium="video" duration="92928" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/18/289/heisenberg-humor-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/18121247/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | Surviving the Tsunami Preview</title><link>http://watch.thirteen.org/video/2105851200/</link><description>Gripping personal stories from Japan offer lessons on how to act in the face of a life-threatening disaster. Airs September 28, 2011 on PBS.</description><guid>http://watch.thirteen.org/video/2105851200/</guid><pubDate>08/25/2011</pubDate><media:description>Airs September 28, 2011 on PBS.</media:description><media:content medium="video" duration="30400" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/985/304/nova-007407-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2105851200/" /><category domain="PBS/taxonomy/topic">News &amp; Public Affairs</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">News &amp; Public Affairs</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Weather &amp; Natural Disasters</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Weather &amp; Natural Disasters</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Reflections on the 9/11 Memorial</title><link>http://watch.thirteen.org/video/2137204289/</link><description>Visitors to the newly opened 9/11 memorial share their impressions.</description><guid>http://watch.thirteen.org/video/2137204289/</guid><pubDate>09/21/2011</pubDate><media:description>Visitors to the newly opened 9/11 memorial share their impressions.</media:description><media:content medium="video" duration="140164" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/1015/202/nova-007421-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2137204289/" /><category domain="PBS/taxonomy/topic">News &amp; Public Affairs</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">News &amp; Public Affairs</media:category><category domain="PBS/taxonomy/topic">Opinion</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Opinion</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | The Spacetime Lemonade Stand</title><link>http://watch.thirteen.org/video/2120512438/</link><description>Thirsty for understanding? See how well people on the street can explain spacetime.</description><guid>http://watch.thirteen.org/video/2120512438/</guid><pubDate>09/07/2011</pubDate><media:description>Thirsty for understanding? See how well people on the street can explain spacetime.</media:description><media:content medium="video" duration="150266" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/999/285/nova-007420-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2120512438/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Physics &amp; Mathematics</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Physics &amp; Mathematics</media:category><pbsvideo:content_type>Clip</pbsvideo:content_type></item><item><title>NOVA | Engineering Ground Zero Preview</title><link>http://watch.thirteen.org/video/2088398103/</link><description>Designing and building One World Trade Center and the National September 11 Memorial &amp; Museum Premiering September 7, 2011 at 9pm on PBS</description><guid>http://watch.thirteen.org/video/2088398103/</guid><pubDate>08/10/2011</pubDate><media:description>Premiering September 7, 2011 at 9pm on PBS</media:description><media:content medium="video" duration="30000" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/968/668/nova-007406-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2088398103/" /><category domain="PBS/taxonomy/topic">News &amp; Public Affairs</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">News &amp; Public Affairs</media:category><category domain="PBS/taxonomy/topic">Biography &amp; Profiles</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Biography &amp; Profiles</media:category><category domain="PBS/taxonomy/topic">Science &amp; Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Technology</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Technology</media:category><category domain="PBS/taxonomy/topic">Transportation &amp; Infrastructure</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Transportation &amp; Infrastructure</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Engineering Ground Zero</title><link>http://watch.thirteen.org/video/2119539367/</link><description>To commemorate the 10th anniversary of 9/11, NOVA presents an epic story of engineering, innovation, and the perseverance of the human spirit. With extraordinary access granted by The Port Authority of New York and New Jersey, &quot;Engineering Ground Zero&quot; follows the five-year construction of One World Trade Center (1 WTC) and the National September 11 Memorial and Museum.</description><guid>http://watch.thirteen.org/video/2119539367/</guid><pubDate>09/08/2011</pubDate><media:description>Designing and building One World Trade Center and the National 9/11 Memorial and Museum</media:description><media:content medium="video" duration="3187472" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/998/359/nova-007406-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2119539367/" /><category domain="PBS/taxonomy/topic">News &amp; Public Affairs</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">News &amp; Public Affairs</media:category><category domain="PBS/taxonomy/topic">Science &amp; Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Technology</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Technology</media:category><category domain="PBS/taxonomy/topic">Transportation &amp; Infrastructure</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Transportation &amp; Infrastructure</media:category><pbsvideo:content_type>Episode</pbsvideo:content_type></item><item><title>NOVA | Rebuilding 7 World Trade Center</title><link>http://watch.thirteen.org/video/2113077846/</link><description>Developer Larry Silverstein explains what&#39;s different about the new 7 World Trade Center.</description><guid>http://watch.thirteen.org/video/2113077846/</guid><pubDate>09/01/2011</pubDate><media:description>Developer Larry Silverstein explains what&#39;s different about the new 7 World Trade Center.</media:description><media:content medium="video" duration="108288" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/992/193/nova-007419-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2113077846/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Technology</media:category><category domain="PBS/taxonomy/topic">Transportation &amp; Infrastructure</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Transportation &amp; Infrastructure</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | Becoming Human - Preview</title><link>http://watch.thirteen.org/video/2098138008/</link><description>NOVA presents a comprehensive three-part, three-hour special, investigating explosive new discoveries that are transforming the picture of how we became human. 8/31/11</description><guid>http://watch.thirteen.org/video/2098138008/</guid><pubDate>08/18/2011</pubDate><media:description>Airs Wednesday, August 31, 2011 at 8:00 p.m. ET/PT. Check your local listings.</media:description><media:content medium="video" duration="30720" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_Promotions/977/963/NOVA-3613-human-COVE-THUMB.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2098138008/" /><category domain="PBS/taxonomy/topic">Arts &amp; Entertainment</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Arts &amp; Entertainment</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | The 9/11 Memorial Mock-Up</title><link>http://watch.thirteen.org/video/2105613808/</link><description>Architect and designer Michael Arad takes us on a tour of his 9/11 Memorial mock-up.</description><guid>http://watch.thirteen.org/video/2105613808/</guid><pubDate>08/25/2011</pubDate><media:description>Architect and designer Michael Arad takes us on a tour of his 9/11 Memorial mock-up.</media:description><media:content medium="video" duration="114986" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/985/72/nova-007417-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2105613808/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Technology</media:category><category domain="PBS/taxonomy/topic">Transportation &amp; Infrastructure</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Transportation &amp; Infrastructure</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | Walls of Glass</title><link>http://watch.thirteen.org/video/2105393879/</link><description>One World Trade Center&#39;s glass facade may look fragile, but it is extraordinarily tough.</description><guid>http://watch.thirteen.org/video/2105393879/</guid><pubDate>08/25/2011</pubDate><media:description>One World Trade Center&#39;s glass facade may look fragile, but it is extraordinarily tough.</media:description><media:content medium="video" duration="149226" /><media:thumbnail url="http://www-tc.pbs.org/video/media/images/assets/videos/2105393879/2105393879_ThumbnailCOVEDefault.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2105393879/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Technology</media:category><category domain="PBS/taxonomy/topic">Transportation &amp; Infrastructure</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Transportation &amp; Infrastructure</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | The Memorial Plaques</title><link>http://watch.thirteen.org/video/2105393892/</link><description>Visit the factory where the 9/11 Memorial plaques are made.</description><guid>http://watch.thirteen.org/video/2105393892/</guid><pubDate>08/25/2011</pubDate><media:description>Visit the factory where the 9/11 Memorial plaques are made.</media:description><media:content medium="video" duration="151872" /><media:thumbnail url="http://www-tc.pbs.org/video/media/images/assets/videos/2105393892/2105393892_ThumbnailCOVEDefault.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2105393892/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Technology</media:category><category domain="PBS/taxonomy/topic">Transportation &amp; Infrastructure</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Transportation &amp; Infrastructure</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | Solving an Engineering Problem</title><link>http://watch.thirteen.org/video/2105126559/</link><description>Bracing One World Trade Center&#39;s steel frame led to some unexpected perks at the worksite.</description><guid>http://watch.thirteen.org/video/2105126559/</guid><pubDate>08/25/2011</pubDate><media:description>Bracing One World Trade Center&#39;s steel frame led to some unexpected perks at the worksite.</media:description><media:content medium="video" duration="169749" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/984/620/nova-007415-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2105126559/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Technology</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Technology</media:category><category domain="PBS/taxonomy/topic">Transportation &amp; Infrastructure</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Transportation &amp; Infrastructure</media:category><pbsvideo:content_type>Segment</pbsvideo:content_type></item><item><title>NOVA | Hunting the Hidden Dimension - Preview</title><link>http://watch.thirteen.org/video/2096774095/</link><description>A revolutionary new branch of math called fractals has changed the way we see the world and opened up a vast new territory to scientific analysis and understanding. 8/24/11</description><guid>http://watch.thirteen.org/video/2096774095/</guid><pubDate>08/17/2011</pubDate><media:description>Airs Wednesday, August 24, 2011 at 9:00 p.m. ET/PT. Check your local listings.</media:description><media:content medium="video" duration="30733" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_Promotions/976/655/NOVA-3514-fractal-COVE-THUMB.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2096774095/" /><category domain="PBS/taxonomy/topic">Arts &amp; Entertainment</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Arts &amp; Entertainment</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Brian Greene Answers Your Questions</title><link>http://watch.thirteen.org/video/2085853458/</link><description>Brian Greene, author and host of NOVA&#39;s &quot;The Fabric of the Cosmos,&quot; answers questions from Facebook and Twitter, including: 1) What is &quot;The Fabric of the Cosmos&quot; about?; 2) Where would you go if you had a time machine?; and 3) What&#39;s your favorite tech gadget? &quot;The Fabric of the Cosmos&quot; premieres November 2, 2011 on PBS.</description><guid>http://watch.thirteen.org/video/2085853458/</guid><pubDate>08/08/2011</pubDate><media:description>Author and physicist Brian Greene answers questions from Facebook and Twitter.</media:description><media:content medium="video" duration="67605" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_NOVA/966/231/nova-000000-thumb.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2085853458/" /><category domain="PBS/taxonomy/topic">Arts &amp; Entertainment</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Arts &amp; Entertainment</media:category><pbsvideo:content_type>Clip</pbsvideo:content_type></item><item><title>NOVA | Rat Attack - Preview</title><link>http://watch.thirteen.org/video/2073115013/</link><description>The half-century bloom of a bamboo species leads to an explosion in the rat population in the Indian state of Mizoram. 8/3/11</description><guid>http://watch.thirteen.org/video/2073115013/</guid><pubDate>07/28/2011</pubDate><media:description>Airs Wednesday, August 3, 2011 at 9:00 p.m. ET/PT. Check your local listings.</media:description><media:content medium="video" duration="30743" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_Promotions/954/79/NOVA-3603-Rat-COVE-THUMB.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2073115013/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Animals</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Animals</media:category><category domain="PBS/taxonomy/topic">Earth</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Earth</media:category><category domain="PBS/taxonomy/topic">Environment</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Environment</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Arctic Dinosaurs - Preview</title><link>http://watch.thirteen.org/video/2052193280/</link><description>With the help of CGI, NOVA breathes life into the polar dinosaurs&#39; lives and environment in vivid detail. 7/27/11</description><guid>http://watch.thirteen.org/video/2052193280/</guid><pubDate>07/12/2011</pubDate><media:description>Airs Wednesday, July 27, 2011 at 9:00 p.m. ET/PT. Check your local listings.</media:description><media:content medium="video" duration="30789" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_Promotions/934/128/NOVA-3511-arctic-COVE-THUMB.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2052193280/" /><category domain="PBS/taxonomy/topic">History</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">History</media:category><category domain="PBS/taxonomy/topic">Prehistoric</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Prehistoric</media:category><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | Lizard Kings - Preview</title><link>http://watch.thirteen.org/video/2053319118/</link><description>NOVA follows expert lizard hunter Dr. Eric Pianka as he tracks the elusive monitor lizards through Australia&#39;s heartland with cutting-edge &quot;lizard cam&quot; technology for an unparalleled close encounter with these versatile &quot;living dragons.&quot; 7/27/11</description><guid>http://watch.thirteen.org/video/2053319118/</guid><pubDate>07/13/2011</pubDate><media:description>Airs Wednesday, July 27, 2011 at 8:00 p.m. ET/PT. Check your local li</media:description><media:content medium="video" duration="30720" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_Promotions/935/203/NOVA-3616-Lizard-COVE-THUMB.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2053319118/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Animals</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Animals</media:category><category domain="PBS/taxonomy/topic">Environment</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Environment</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item><item><title>NOVA | The Great Inca Rebellion - Preview</title><link>http://watch.thirteen.org/video/2052117201/</link><description>An ancient Peruvian cemetery crammed with disfigued mummies helps explain a long-standing mystery about the Spanish conquest of the Inca Empire. 7/20/11</description><guid>http://watch.thirteen.org/video/2052117201/</guid><pubDate>07/12/2011</pubDate><media:description>Airs Wednesday, July 20, 2011 at 9:00 p.m. ET/PT. Check your local listings.</media:description><media:content medium="video" duration="30733" /><media:thumbnail url="http://www-tc.pbs.org/cove-media/http/PBS_CP_Promotions/934/53/NOVA-3409-Rebellion-COVE-THUMB.jpg" type="image/jpeg" height="60" width="142" /><media:player url="http://watch.thirteen.org/video/2052117201/" /><category domain="PBS/taxonomy/topic">Science &amp; Nature</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Science &amp; Nature</media:category><category domain="PBS/taxonomy/topic">Forensics &amp; Investigations</category><media:category scheme="http://www.pbs.org/rss/pbscontent/taxonomy/topic">Forensics &amp; Investigations</media:category><pbsvideo:content_type>Promotion</pbsvideo:content_type></item></channel></rss>

