Mega Structures Roller Coaster

Diego mingles with graffiti artists and dodges bullets to find what unites the extreme rich and poor in São Paulo.

A man complaining of flu symptoms is discovered to have Anthrax in his spinal fluid.

Caught in the Act reveals some of the most incredible and disturbing animal acts ever captured on film.

This catfish has produced nearly 140,000 eggs, which is key for survival. The more eggs, the better the chance for hatchlings to

After an epic journey to find a mate, polar bears must be ready to perform.