NOVA scienceNOW: Dark Matter, Mice, Crowd Wisdom

Aired 2008-06-25

Dark Matter - Turns out most of the universe is held together by a mysterious, invisible substance. Of Mice and Memory - Mice placed in enriched environments can recover lost memories, giving hope to those who study Alzheimer's. Profile: Hany Farid - This self-proclaimed "accidental scientist" is a digital detective inventing new ways to tell if photos have been faked. Wisdom of the Crowds - Ask enough people to estimate something, and their combined guesses will get you surprisingly close to the right answer.

Playback is provided by a third-party source (XPrime). StreamFlix does not host any video files. If a stream fails to load, the source may be temporarily unavailable.

NOVA scienceNOW: Dark Matter, Mice, Crowd Wisdom

Dark Matter, Mice, Crowd Wisdom

Personal Genome; Digital Art Authentication; Carbon Sequestration; Pardis Sabeti Profile

Saving Hubble, First Primates, Iraqibacter

Bird Brains, Space Storms, Smart Bridges

Leeches; SETI; Stem Cells; Edith Widder

Phoenix; Mammoth Mystery; Judah Folkman Tribute

Aging, Space Elevator, Maya from Space

Mass Extinction, 1918 Flu, Papyrus

Asteroid, Island of Stability, Karl Iagnemma

T-Rex Blood, Epigenetics, Kryptos