If an advanced civilisation lived on earth millions of years ago, would we be able to tell?

Two contrasting visions of humanity’s future in space

Where did life on Earth begin? That sounds like a relatively straightforward question. Surely life on Earth began… well, on Earth, right? We know this planet had the right conditions for life to arise

Mass extinctions and evolutionary leaps, from bacteria to Homo sapiens

PHOTO: SHUTTERSTOCK/VIKTORISHY 1 W e can dim the ...

By following Earth’s journey around the Sun, scientists are able to predict the next deep freeze

Mars once had vast oceans on its surface. Then its magnetic field weakened, its atmosphere thinned, and its water vanished. But the numbers don’t add up. For the Red Planet to have transformed from a