People around the world are celebrating Mohandas K. Gandhi's 140th birthday, including children who dressed as him (mustache and all), U.S. President Barack Obama—even Google.

See the latest, four-winged evidence that birds are dinosaurs in disguise, the guts of Nero's rotating dining room, a new Hubble stunner, and more.

See images of Ardi, the new human ancestor that could rewrite evolutionary theory. Updated.

Whole villages have been wiped out and scores are dead after an earthquake in the South Pacific triggered a tsunami that swept across several islands, including American Samoa, which has now been declared a major disaster area.

Dubai glitters in a space station view, a hundred-ton antenna catches a lift, an Indian probe spots traces of water on the moon, and more in the best new space pictures of the week.

A frog that eats birds and a catlike lizard are some of the 163 surprising new species discovered last year in the jungles of Southeast Asia's Greater Mekong region, WWF reports.

Found by an amateur treasure hunter in England, the largest known Anglo-Saxon gold hoard is rich with precious stones and intricately wrought war gear.

Found by an amateur treasure hunter in England, the largest known Anglo-Saxon gold hoard is rich with precious stones and intricately wrought war gear.

Found by an amateur treasure hunter in England, the largest known Anglo-Saxon gold hoard is rich with precious stones and intricately wrought war gear.

See Ohio daredevils stage their own Burning Man festival, a planet take shape, whiskers go wild, and more in the week's best news pictures.

A sharp-eyed spacecraft has uncovered pure water ice—and perhaps liquid water—much closer to the planet's equator than thought, new images show.

Some lizards get no respect. Even after finally being recognized by science, a new gecko species' middle name is still "misunderstood."

California tadpoles are developing into frogs with missing legs and eyes—deformities possibly caused by an alien parasite that usually attacks farmed fish, experts say.

Flying for years under the scientific radar, the new ghostshark species is among the world's oldest and—and oddest—fish.

See Saturn "split in half" by sunlight, sparkling sights near the Milky Way's black hole, the futuristic final plane to be tested in a dying wind tunnel, and more in the best new space pictures of the week.