Video footage shows a delicate, transparent animal with a doglike head more than five miles down.
These strange lily-pad formations occur when conditions are just right.
With the help of modern artists and high technology, a replica of the famous art cave of Chauvet-Pont-d'Arc will open to the public in April.
Colliding galaxies put on a show, Martian gullies meet Jack Frost, and cities glitter for the holidays in this week's best space pictures.
Fracking for shale oil has boosted U.S. oil production to near-record levels. But the industry faces two challenges: low prices and low reserves.
Targeted by hunters and threatened by shrinking habitat, Persian leopards fight for survival along the Iran-Iraq border.
A viral YouTube video showing a tortoise pushing another back on its feet may be a case of aggressive courtship, expert says.
New York has banned fracking. Will other states follow suit?
Large predators are filling the forests and abandoned farmlands of Europe, a return to the wild not always comfortable for people.
A flock of warblers suddenly left Tennessee in advance of severe thunderstorms, suggesting that they had sensed the weather and fled, a new study says.
Natgeosocus sorini, which swam in subtropical seas about 36 million years ago, helps illuminate a rare, extinct family of fish.
Scientists track down plastic sea trash to find out where it hides.
Snowbirds go to Miami Beach for fun, sun, and to live la vida loca. Gate-crashers, IMHO. I was there first. I'm a native.
When "the pill" was first sold, contraception was listed as a side effect.
Some Cubans have a lot to lose from an influx of American dollars.
Photographer Michael Melford is celebrating the announcement that the U.S. government will protect the area's waters from oil and gas development.
Professor Wu, a critically endangered Chinese giant salamander, is the face of a new effort to save these creatures in the wild.
The U.S. Navy honors a late World War II captain of a ship that sank a German U-boat off Louisiana, based on new exploration.
Rosetta mission scientists grow hopeful for a revival of their stranded Philae lander.
Europe's hard-working Venus Express has finally run out of gas and will start to fall through the planet's thick atmosphere.