A new brain-computer interface turns thought into action with lightning speed, allowing precise piloting of a wheelchair, experts say. Their advice: "Imagine playing the piano or jogging."

Rare "night shining" clouds linked to the 1908 Russian event and plumes from shuttle launches suggest that the blast was caused by an icy comet, a new study says.

To help revive the Przewalski's horse, or takhi, in Mongolia, a Washington, D.C., zoo hosted the first ever reverse vasectomy on the species. Video.

Before it reopens on the Fourth of July, get an insider's eye on the Statue of Liberty--the inside of her face, the little-known ladder to the torch, and more.

Ice crystals drifting from Martian clouds resemble the glittering precipitation that falls in Earth's Arctic regions during winter, new data show.

Migaloo, a twentysomething rare white humpback whale was seen this week along Australia's east coast, where he's migrating northward with other humpbacks. Video.

A superbright object in a distant galaxy is "the best candidate yet" for a theoretical middleweight known as an intermediate-mass black hole, a new study says.

From glass pyramids to towers of greenhouses, see some of the concepts that architects have created for vertical farms, a proposed strategy for growing crops year-round at the hearts of urban centers.

Some dogs can smell odors given off by humans with bladder cancer and diabetes, researchers say. In some cases, the canines warn of oncoming attacks. Video.

Sinkholes around the Dead Sea pose a hazard to tourists and the environment alike. The danger may only get worse, and geologists hope to map problem areas to help protect the public. Video.

Lady Hor, an ancient Egyptian mummy at New York's Brooklyn Museum, is actually Sir Hor, CT scans reveal. Video.

See the full-scale re-creation of the top secret Nazi plane that could have turned the tide of World War II—as well as the last surviving example of "Hitler's stealth fighter."

Aerospace engineers have re-created Hitler's "stealth" fighter to determine whether the batlike plane was truly radar resistant—and whether it could have changed history.

In a Florida forest, worm "grunters" use an unusual technique to catch earthworms to sell for bait.Video.

Mysterious glowing blobs of gas in the deep universe are mysteries no more: The clouds appear when galaxies are in the process of slowing down their own growth, new x-ray images suggest.