After 9,000 years Chaiten volcano has exploded back to life, forcing people to flee its southern Chile region.

Eight Amur leopards—the world's rarest big cats—were recently photographed in far southeastern Russia, giving renewed hope to conservationists.

People living in the earliest known settlement in the Americas relied partly on seaweed, bolstering the theory that the New World was settled via a coastal route, a new study says.

See how Cyclone Nargis changed the landscape of the Irrawaddy River delta, where massive floods killed tens of thousands.

The 131-million-year-old Confucius bird was built more aerodynamically than earlier fliers such as Archaeopteryx.

A "perfect storm" of factors—from location to wind speed to poor preparation—have resulted in perhaps a hundred thousand deaths from Cyclone Nargis.

A six-month-old whale found dead on a New Zealand coastline is giving scientists a rare peek into the anatomy of the bizarre creature.

Thousands of horses, cows, and other livestock face a possibly toxic brew of deep ash and gases. And the region's all-important farms may be devastated for decades.

Burying surrounding areas in a shroud of ash and mud, the volcano has led to thousands of evacuations over its five-day eruption.

The genome of the platypus—our most distant mammal relative—has been decoded, revealing traces of mammals' evolutionary break from reptiles hundreds of millions of years ago.

Hurricane-force winds, driving rain, and widespread flooding have killed perhaps 10,000 people, torn apart buildings, and sunk ships in the Southeast Asian country.

Bodies floated in floodwaters, and survivors tried to reach dry ground using blankets as sails, while a U.S. diplomat said up to a hundred thousand may have died.

The grassy prehistoric Sahara turned to desert more slowly than previously thought, a new report says—and some say global warming may turn the desert green once again.

Doctors in Australia believe the bionic eye they've created is safer than similar devices developed in other countries.

Southern Chile's Llaima volcano erupted in a fiery explosion of molten rock and ash this week. Tourists, park workers, and residents are evacuated from the area.