A startling new report asserts that the first known Americans arrived much, much earlier than scientists thought -- more than 100,000 years ago. And maybe they were Neanderthals.
Astronomers on Wednesday announced the discovery of a super-Earth orbiting a nearby star which may offer the most promising target yet in the search for life beyond the Solar System.
The key to the survival of the world's threatened coral reefs may lie in the waters surrounding a small volcanic island off the coast of Japan, scientists say.
Fossils of a four-legged, meat-eating reptile are helping paint a more complicated picture of the ancestry of dinosaurs than scientists had understood.
Another "Great Spot" has been found at Jupiter, this one cold and high up.
Analysis of ancient penguin guano has revealed that volcanic eruptions, not climate change, almost wiped out an Antarctic sea bird colony three times, researchers have found.
Jupiter is extra close and extra bright this week, and that means some amazing, new close-ups.
An "unprecedented" 21 different types of dinosaur tracks have been found on a stretch of Australia's remote coastline, scientists said Monday, dubbing it the nation's Jurassic Park.
A major World War II museum opened in northern Poland on Thursday amid plans by the conservative government to change its content to fit the government's nationalist views.
The rusty patched bumblebee on Tuesday became the first officially endangered bee species in the continental U.S., overcoming objections from some business interests and a last-minute delay ordered by the Trump administration.