Wild octopuses engage in "jealous murders," gender bending, and once-in-a-lifetime sex, unlike their seemingly shy, unromantic captive brethren, a new study says.
Tubular organisms that lived about 565 million years ago were found in positions that indicate they may have been the first animals to engage in sexual reproduction, researchers suggest.
See photos from the April Fools' Day parody, including Paris Hilton gone wild. Though National Geographic helped with design, the magazine had no part in the satire's content.
The Harvard Lampoon had a little help from National Geographic itself—though the magazine had nothing to do with the Paris Hilton cover or any of the content.
A 31-mile-long (50-kilometer-long) layer of rock in northwest Scotland comes from a meteorite that crashed into Earth more than a billion years ago, experts say.
Giant sea spiders, spine-crushing daggertooth fish, and pink "sea pigs" are just a sampling of exotic creatures hauled up by scientists during a recent Antarctic expedition.
Learn about the origin of April Fools' Day—a yearly ritual for pranksters to try out their best jokes—and how reality-based humor may get the last laugh.
Egypt's City of the Dead is one of the country's largest cemeteries, dating back to the 14th century. As Cairo's population swells, the graveyard provides cheap and even free housing.
