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For all their infamous raiding and plundering, the Vikings who attacked from Scandinavia might have been just a bunch of lonely-hearted bachelors, new research suggests.

It sounds like a big fish story: a plan to create a biodiversity map identifying thousands of aquatic species in every river and stream in the western U.S.

During its wheeled treks on the Red Planet, NASA's Spirit rover may have encountered a potential signature of past life on Mars, report scientists at Arizona State University (ASU).

A group of high school students participating in an archaeological excavation in Israel expected to uncover artifacts from long-ago civilizations buried deep in the ground.

Almost 400 years after the Pilgrims celebrated their first Thanksgiving, archaeologists have unearthed evidence of the original 1620 settlement in Plymouth, Mass.

Illegal salvagers have plundered at least six World War II shipwrecks near Indonesia for scrap metal, including the wreck of an American submarine that has now "completely vanished," according to investigators.

The "First Doll in Space" is getting her very own spacesuit.

Donald Trump on Tuesday backed away from his earlier statements that climate change was a “hoax” invented by the Chinese and said there was some connection between the climate and human activity.

Researchers at Florida State University have uncovered evidence that wild turkeys were a common part of Native American life hundreds of years before the first Thanksgiving.

Outdoors outfitter Patagonia is taking an unusual approach to Black Friday: CEO Rose Marcario says 100% of the day's sales online and in its 80 locations worldwide will go toward groups that help the environment.

Could the dashboard video from a drive down a dark, winding, snowy road in the Russian countryside have turned up proof of the “missing link” that Yeti and Bigfoot chasers have been looking for?

NASA's Dawn probe is snapping stunning new views of the dwarf planet Ceres as the spacecraft pushes ever higher above the small world.

Using a roughly 27-foot telescope on the summit of a mountain in Hawaii, astronomers have discovered a new satellite dwarf galaxy near our own, and it could be the faintest one ever found.

In drought-stricken California, 36 million trees have died since May, the Los Angeles Times reports.

New aerial photos offer the first glimpse of an uncontacted tribe in the Brazilian Amazon that experts warn could be in danger of being wiped out.

For 60 years, one of the earliest paintings by Frida Kahlo hung on the wall of a California home, unseen by the public and its location a mystery, Reuters reports.

A fearsome carnivorous dinosaur known for eating its own kind wasn't that large — it weighed only about as much as a hefty crocodile.

For years, scientists believed the mighty San Andreas—the 800-mile-long fault running the length of California where the Pacific and North American plates meet—could only rupture in isolated sections.

The most advanced weather satellite ever built rocketed into space Saturday night, part of an $11 billion effort to revolutionize forecasting and save lives.

The International Space Station gained three new residents Saturday, including the oldest and most experienced woman to orbit the world.