Christopher Raxworthy is searching for what he calls a 'cryptic' species of chameleons that might revolutionize our understanding of evolution.

The flammulated owl is unusual. It's small. It's secretive. It "coos" instead of "hoots." And it's sensitive to changes in its environment.

Ancient DNA can yield surprising answers to questions about the evolution and relationships between species.

Steve Monismith said that diverting so much water for human use alters the physics of the San Francisco Estuary and the life cycles of local fish.

David Freyberg said that right now, dam removal is as much a values question as a science question, and also all their environmental costs.

Traveling to the poles is nothing new to me. But I notice the changing poles and on this trip my job will be to help measure and understand this change.

So what makes Mexican jumping beans jump? As the tiny larvae inside curl up and uncurl, they hit the capsule's wall with their heads - and the bean jumps.

Camels are just very efficient at using water. If camels' humps are not full of water, why do camels have humps? And where do camels store water?

If you any warm object and expose it to cold air, that object will lose heat to the air. Wind chill refers to greater heat loss due to the motion of the air.

Economist James Hughes talks about a New Jersey ballot measure that would would offer $400 million in bonds to support land and historic preservation efforts in New Jersey. Dr. Hughes explains why land conservation is profitable for states, and becoming more so.