A new study adds evidence to the theory that warmer seas have led to stronger hurricanes—but some experts remain skeptical.

Pecking away at the validity of video evidence released last year, some bird experts question whether birding's Elvis has really returned to life.

Seen one volcanic plume, seen 'em all? Not so, says a new study, which identifies an entirely new type of ash cloud that may also be a new danger.

U.S. and Canadian authorities are bracing for the killer strain's arrival in North America, which many experts say is inevitable.

Tiny microbes that live inside termites may one day help cure the world's energy woes, according to scientists.

A new report shows that Antarctica has been losing ice rapidly—the equivalent of about 40 trillion gallons (151 trillion liters) of water a year. Learn what this big melt may mean for the future.

An unmanned monitoring station on Nepal's longest glacier will help researchers investigate the ice-melt threat in the Himalaya mountain range.

The dike along Florida's Lake Okeechobee, a shallow lake nearly the size of Rhode Island, is leaking. Could a hurricane cause another Katrina-like flood disaster?

The north Bering Sea, one of the world's richest feeding grounds for marine life, is warming to the point where animals must adapt or suffer the consequences.

Genome researchers have identified more than 700 regions in human DNA where apparently strong selection has occurred, driving the spread of genes linked to traits from bone structure to skin color.

A team of biologists has identified 20 hot spots around the world where mammal species, while not yet appearing threatened, are likely to be at high risk of extinction in decades to come.

Watch as a small band of intrepid explorers uncover a rain forest mining operation that is poisoning the local environment.

Watch as an intrepid team patrols an isolated Brazilian park by boat, skirting raging currents and thundering falls and making contact with Indian tribes.

New research suggests that a drop in rainfall in Africa, as predicted by many scientists, could have a devastating effect on the continent's rivers.

Evidence of corn and arrowroot at an ancient Peruvian house offers new insight into the interactions of early South American cultures.