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A new study suggests that life may have existed on Mars hundreds of millions of years prior to its emergence on Earth.

As the search for intelligent extraterrestrial life marches on, researchers have suggested no shortage of possible signs to look for, including carbon monoxide, dust storms and methane, which is commonly emitted from organic means, including humans. But new research suggests that it's possible E.T. isn't producing any of these and is emitting a gas nearly as toxic to humans as carbon monoxide — phosphine.

Modern architecture and archaeology don’t typically go hand-in-hand. However, the two mixed in an unprecedented way when ancient ruins were discovered under what would become the Antakya Museum Hotel in Turkey.

Some of the oldest Neanderthal bones have been DNA tested showing more than 70 differences from the species that died out 80,000 years later.

Scientists exploring an area that's thought to contain an ancient lost city in the Honduras rainforest have discovered a vast ecosystem of rare and endangered species, including some animals that were supposedly extinct.

Several graves containing what are likely the remains of more than 30 U.S. Marines and sailors killed during one of the bloodiest battles of World War II were discovered on a remote Pacific Island, officials said.

The fossilized remains of a dinosaur that was discovered at a Colorado construction site last month have been identified as a triceratops.

A kangaroo sighting in Wisconsin has sent local police on a chase for the marsupial.

The powerful eruption of the Raikoke volcano was captured by astronauts on the International Space Station on Saturday.

Fact: Whale sharks — the largest known fish in the sea and some of the largest creatures on Earth — exist.

One of the last crusader kings had scurvy when he died, a new forensic analysis finds — contradicting old narratives that he died of plague or dysentery.

A Victorian local was surprised when they stumbled across a bizarre-looking creature while walking along a beach in the state’s southeast.

A shocking documentary is shedding new light on just how far the Nazis and Allied soldiers went in an attempt to win World War II — including the use of performance enhancing drugs.

BERLIN (AP) — Scientists in Europe said Tuesday they've successfully transferred a test tube rhino embryo back into a female whose eggs were fertilized in vitro, as part of an effort to save another nearly extinct sub-species of the giant horned mammal.

Plastic pollution seems to have found a new way to creep into the natural landscape.

It’s a blast that may have been more than 70 years in the making.

In extraordinarily salty puddles of water resembling ones you might find on Mars, bacteria can survive getting completely dried out, suggesting that the Red Planet may be more habitable than previously thought, according to a new study.

A new mission will intercept an undiscovered comet en route to Earth's orbit, the first of its kind to observe a pristine interstellar object as it enters the inner solar system.

Saturn's moon Titan has fascinated scientists as it contains lakes that have similar features to those on Earth and is the only other celestial object in the solar system to have surface liquid. In areas of the moon where the liquid has evaporated, dark smears have been spotted, which researchers believe operate in similar fashion to “bathtub rings” — and they might be made of "alien crystals."

Once upon a time, Western Australia was covered in forests and those forests were filled with sightless, eyeless, tip-tapping critters called schizomids.