Watch NOVAs

Missing in MiG Alley (Dec. 2007)

What happened to American pilots shot down over Korea half a century ago? Watch now (49 mins.)

Judgment Day: Intelligent Design on Trial (Nov. 2007)

Science is 'Exhibit A' in a landmark trial on the teaching of evolution. Watch now (108 mins.)

Sputnik Declassified (Nov. 2007)

Top-secret documents rewrite the history of the famous satellite and the early space race. Watch now (49 mins.)

Marathon Challenge (Oct. 2007)

Explore what it takes—physically and mentally—for novice runners to make it through a classic test of endurance. Watch now (50 mins.)

NOVA scienceNOW Episode 10 (July 2007)

Learn how our lifestyles can change the way our genes work, examine a yet-to-be-broken code on a sculpture called Kryptos, see preserved dinosaur blood vessels, and meet cosmologist Arlie Petters. Watch now (47 mins.)