Science & Weather

Is Earth at the mercy of asteroids or can we defend ourselves from a cosmic collision?

Feel the awesome power of avalanches and hear chilling firsthand and rescue accounts.

Explore the miraculous potential and frightening possibilities behind genetic cloning.

Explore the human body from the inside out as never before.

Witness the colossal power of earthquakes, tornadoes and floods.

Go beyond biology to explore the influence of skin on our perceptions of attraction, race and personal identity.

An exploration of the mystery and mystique surrounding precious gems -- diamonds, pearls, emeralds and rubies.

A chilling look at one of the most violent and destructive storms to hit the U.S. this century

Take a fascinating journey through the wonders of the inner world of the human body.

Go on a collision course with a deadly twister.

Confront one of the sea's most forces. A portion of the proceeds go to Tsunami relief.

Go beyond biology to explore the influence of skin on our perceptions of attraction, race and personal identity.