Snapping turtles are teaching us invaluable lessons about the effects of toxins on the environment.

A first contact interaction with the elusive Korubo Indians of the Brazilian Amazon.

An expedition established peaceful contact with a group of Amazonian Indians.

Gribbles are an essential "cleanup crew" for our oceans and estuaries.

These tiny wood-boring crustaceans have plagued man-made structures since the days of Columbus.