As Earth approaches warmer levels experienced earlier in its geologic history, it may be bad news for human survival.

For now, life thrives on our oxygen-rich planet. But Earth’s atmosphere won’t always be so welcoming. In fact, scientists ...

As science advanced and telescopes developed, however, we realized that the Earth is just a small planet in a massive ...

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

Roughly 300,000 years ago, our species first appeared on the African landscape before spreading globally and coming to ...

The answer lies in the same fact that keeps Earth from plunging into the Sun. Our planet is traveling very ... and is way beyond the capacity of human space travel at this stage.

ALIENS could discover humans on Earth by spotting one ... into space – and wait for it to bounce back to Earth from an object, like an alien planet. When we get the reflected radio echo, it ...

The climate crisis has gone so far that it's altering the shape and spin of our planet, and changing our experience of time itself, according to a new study published in the journal Nature on ...

And in its own way, the planet’s rusty red surface tells a story of destruction. Billions of years ago, the fourth planet from the sun could have been mistaken for Earth’s smaller twin ...