Add Yahoo as a preferred source to see more of our stories on Google. The Sun's distance from Earth allows it to be habitable for life. DrPixel/Moment via Getty Images A popular model of evolution ...

For decades, many scientists have relied on the "hard steps" model to suggest that intelligent life is rare — the improbable result of a series of unlikely evolutionary leaps. But new research by ...

Swipe Down for Full Video Story Could intelligent alien civilizations really exist somewhere beyond Earth? As advanced ...

Alien experts claim powerful extraterrestrial life exists in the universe, which is beyond the control of any government — and could wipe out life on earth. Following Tennessee Rep. Tim Burchett’s ...

A new model increases the probability of intelligent life elsewhere in the universe, upending the decades-old “hard steps” theory that intelligent life was an incredibly improbable event on Earth. Are ...

The evolution of humans on Earth may not be entirely exceptional. That is because intelligent life is likely to form if certain planetary conditions are met, a new study suggests. This idea displaces ...

While the Catholic Church teaches nothing definitive on extraterrestrial life, over the centuries Catholic intellectuals have ...

Imagine if the genetic deck had been shuffled slightly differently as some of the earliest life forms began their evolutionary paths. Might a creature just as smart as us -- or even smarter -- have ...