Add Yahoo as a preferred source to see more of our stories on Google. The fossilized tail bones of an Ichthyosaurus, around ...

Humans dominate Earth today, building cities, launching spacecraft and transforming the planet in ways no other known species ...

How could the principle of "radical mundanity" proposed by the Fermi paradox help explain why humans haven't found evidence of extraterrestrial technological civilizations (ETCs)? This is what a ...

Ancient artifacts that suggest past civilizations were far more advanced ...

Earthlings, brace yourselves: the galaxy may be emptier than your last Tinder date. According to a new study, any alien civilizations out there? Probably short-lived — and doomed to fail spectacularly ...

(CNN) — When astrobiologist Adam Frank walked into the office of NASA scientist Gavin Schmidt, he had what he believed was the weirdest question: do aliens experience climate change? It took just ...