The plants outside your window carry a hidden geography. Many arrived from distant continents. A new global forecast shows that mix is about to shift, in ways few people notice until it takes hold.

For instance, what if we really are being visited by aliens from other worlds and they turn out to be aggressive, violent, ...

Star Trek can usually make rubber forehead aliens not just cool, but turn them into pop culture icons. Their five worst ...

Before his death, Stephen Hawking consistently warned humanity against contacting aliens. As interest in UFOs and little ...

K2-18b is one of the most promising worlds for the search for extraterrestrial life, so astronomers conducted an unusually ...

A Soviet astronomer in the 1960s proposed a scale to classify hypothetical alien civilizations. Here’s why the framework is ...

Deep beneath the oceans' crashing waves lies a hidden landscape more alien than many of us could ever dream. Below the ...

Some of these approaches may show promise, but new research indicates much of today’s AI is even more easily duped by false ...

From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more natural source.

There’s no data to suggest that aliens exist. However, if we believed they existed and came to Earth, our planet would offer them a somewhat risky buffet. There is liquid water, as well as salts, ...