A new model warns that half of the years after 2009 will be warmer than 1998, the hottest year on record.

Jupiter may develop self-esteem issues. A puzzling new planet is nearly twice as big—but weighs only three-quarters as much.

Planets like Jupiter and Saturn may form much more easily than previously believed, hints a study of red giant stars.

It's the dawn of the living dead for some ancient bacteria frozen in Antarctic glaciers: The microbes were recently brought back to life by scientists.

See images of the new Phoenix Mars Lander and the evidence for water on the red planet that the mission is designed to pursue.

Get caught up on the most recent findings that add to evidence of Mars's watery past.

Take a virtual tour of Rome circa A.D. 320, and compare the city's digital re-creations with modern photos of the real-life monuments.

In a legally symbolic gesture, Russian mini-subs dove under the Arctic ice to try and secure rights to the region's potential natural resources.

Fossils of tiny fish that lived 420 million years ago have given scientists the earliest insight yet into how vertebrates developed tooth-bearing jawbones.

The packet of genetic code that increases the odds of being a southpaw is also linked to certain mental illnesses such as schizophrenia, a new study says.

Sorry, horror movie fans. There is no longer enough oxygen in the air to support the bird- and person-size insects that roamed Earth 300 million years ago.

A unique kind of underwater vacuum has helped stop an invasion of an exotic algae, which is smothering Hawaii's native corals and grasses.

See a roundup of the week's news and events: England experiences worst flood in 60 years, Thirty Years' War skeletons unearthed, and more.

Seeding plankton blooms to suck up the greenhouse gas CO2 could grow profits for a U.S. firm—but several scientists and regulators are unsure about the ecological consequences.

When complete, this truly salt-of-the-earth accommodation will welcome visitors to Bolivia's remote Salar de Uyuni, the world's largest salt desert.