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.

"Dust is something that travels very far, from one continent to the next across the oceans. The vantage point of space gives you a perspective that you can't see from the ground," says Lorraine Remer.

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.

"We have pollution, we have massive changes to the rivers caused by dams, we alter our lakes and rivers to accommodate cities and farms," says Peter Moyle.

Serge Wich, a scientist at the Great Ape Trust of Iowa, thinks orangutan whistling could provide clues about the evolution of human speech.

Fish and snakes don't have eyelids. Some lizards have 2! Why we need eyelids ...

Within the U.S., the most pervasive problems with regards to air quality are in the area of ozone and particle pollution, says Jim Szykman.