October 22, 2009
Episode 1 of Season 6 premiered on October 22, 2009
February 26, 2009
The hardest known substance on Earth is known for its value and beauty. Scientists believe diamonds could also hold incredible pos...Read more
March 26, 2009 • 1h
Astronomers continue to study black holes to understand what role they play in the universe. Scientists understand that their incr...Read more
December 3, 2009
Episode 5 of Season 6 premiered on December 3, 2009
December 10, 2009
Episode 6 of Season 6 premiered on December 10, 2009
November 12, 2009 • 45m
This episode examines the effects of a hypothetical radiological attack from a car bomb on a major U.S. city. The purpose is to gi...Read more