Space MARS Dead or Alive  50:00 NASA gambles on two rovers sent to determine if the red planet ever had conditions suitable for life. Supermassive Black Hole in the Milky Way   20:08 From a distance, our galaxy would look like a flat spiral, some 100,000 light years across, with pockets of gas, clouds of dust, and about 400... The Elegant Universe (Hour 3)  47:00 Eleven dimensions, parallel universes, and a world made out of strings.	Nature The Four-Winged Dinosaur  50:00 Surprising fossils from northeastern China spur a debate over how birds evolved. A Tale of Two Species  50:44 This is the story of the fabric of life, and how every species is interconnected – each one important, no matter how big or small. At its center is... The Insatiable Appetite  49:17 David Attenborough discovers that birds have evolved an amazing range of bill shapes and sizes.
Science & Technology Power  25:38 Explores the booming field of alternative energy. Cybersenses  26:00 Replacement synthetic senses for people are now a reality. Hunting the Hidden Dimension  50:00 Mysteriously beautiful fractals are shaking up the world of mathematics and deepening our understanding of nature.	History Cracking the Maya Code  49:00 The story behind the centuries-long decipherment of ancient Maya hieroglyphs Ancient Refuge in the Holy Land  54:17 Armed with high-tech equipment and ingeniously improvised devices, NOVA and archaeologist Richard Freund embark on a fascinating detective story that... The Secret Canyon  26:00 The best kept secret of American archaeology is now revealed – an entire canyon of perfectly preserved 1,000-year-old remains.
Health A Walk to Beautiful  52:00 A powerful story of healing and hope for women in Ethiopia devastated by childbirth injuries. Doctors' Diaries  50:00 Seven doctors, 21 years... Saving lives is only part of the story. The Fluoride Deception  28:31 Christopher Bryson, an award-winning journalist and former producer at the BBC, discusses the findings of his new book The Flouride Deception.	Environment Hot Planet - Cold Comfort  26:00 So you think global warming won't affect you? Hunt for the Supertwister  52:46 In seconds, a supertwister can leave immense swaths of death and destruction. What if technology could help us tame nature’s most violent tornadoes? Ocean Animal Emergency  50:00 Wildlife veterinarians struggle to save injured seals and sea lions on the California coast.