1. Dark Matter/Alzheimer's-Memory Mice/Hany Farid/Wisdom of the Crowd
Aired: Jun 25, 2008Dark Matter - Turns out most of the universe is held together by a mysterious...
Nova ScienceNow
Season 3 Episode 10: T-Rex Blood, Epigenetics, Kryptos
T-Rex Blood? - Preserved soft tissue, including possible blood vessels and red blood cells, are turning up in dinosaur fossils. Epigenetics - Our lifestyles can change the way our genes are expressed, leading even identical twins to become distinct as they age. Kryptos - A coded sculpture at CIA headquarters has yet to be fully broken. Profile: Arlie Petters - A boy from a rural village in Belize grows up to become a world-class mathematician and cosmologist.
