Even jet-lagged, the world's lead climate negotiator took time out to brief a few reporters.

This dusty library saves the geo-curious a trip to Antarctica.

Featured blog: As glaciers continue to dry up, so does any hope of gleaning information from them about the past climate record.

Steven Chu, director of Lawrence Berkeley National Laboratory and a Nobel laureate in physics, has advocated for energy thrift. During a September visit to Washington, D.C., he spoke with senior editor Janet Raloff about how he believes the United States can tackle what he sees as a looming energy crisis. You’ve said the United States needs to launch an energy research program that’s comparable to the Apollo mission. What did you mean? That we need big investments and that our country needs to act quickly. In that respect, the programs would be similar. But the Apollo miss...

Featured blog: In the last debate, McCain denounced proposed federal spending on a multimillion dollar "overhead projector."

The feds articulate how much exercise we should consider as healthy.

Featured blog: An October 7 accord could put U.S. Arctic waters off-limits to fishing.

Smokers: Red wine may be the prescription for you.

The U.S. News & World Report rankings of colleges and universities are largely arbitrary, according to a new mathematical analysis.

New nanomaterials may offer a solution to mopping up a toxic pollutant associated with fluorescent lighting.