Season 4

01 Jellyfish Invasion Episode 18th August 2007 02 Science des chiens Episode 215th August 2007 03 Ultimate Crocodile Episode 312th September 2007 04 Science of Babies Episode 419th September 2007 05 Mammoth Mystery Episode 57th October 2007 06 Inside the Body Trade Episode 611th November 2007 07 Ultimate Viper Episode 721st November 2007 08 China's Secret Mummies Episode 82nd December 2007 In China, archaeologists unearth ancient mummies with European facial features, blond hair and blue eyes. Where did these Caucasians come? Four bodies, a scattering of clues, a mystery whose solution could rewrite history. National Geographic Explorer-in-Residence Spencer Wells, opens an ancient case of missing persons, using the latest advances in DNA technology to determine the origins of a group of enigmatic mummies found in western China. What he learns may change what we know about the world. The four individuals were part of a vanished world that existed in western China between 2600 and 4000 years ago - long before Marco Polo or the Silk Road. Yet these long-buried corpses look European and were found with tools that didn't exist yet in that part of the world. Who were they? Where did they come from? And how might they have affected the spread of culture and technology in prehistoric times? 09 Last Christians of Bethlehem Episode 99th December 2007 10 Science of Evil Episode 109th January 2008 11 Testosterone Factor Episode 1113th February 2008 12 Alaska's Last Oil Episode 1212th March 2008 13 Shark Superhighway Episode 138th April 2008 14 Tunnel to a Lost World Episode 143rd June 2008 15 Bog Mummies Episode 154th June 2008 16 Science of Cats Episode 1610th June 2008 17 Gorilla Murders Episode 171st July 2008 18 Finding Anastasia Episode 1829th April 2008 Did Romanov Princess Anastasia survive a Bolshevik firing squad or did she and her brother Crown Prince Alexis perish with their father, Tsar Nicholas II, before another firing squad in 1918? The chance find of human remains in a Siberian forest brings forensic anthropologist Dr.Anthony Falsetti to in search of the truth. Marshalling DNA, ballistics and the very latest forensic analysis, an international team works to dispel the greatest myth of the 20th century and tell a real story more remarkable than any fiction.