They were around 3.5 billion years ago.
Best leave this expedition to Lara Croft!
This is the first time this behaviour has been observed in an actual descending tectonic plate.
Incredible story of how three astronauts survived after getting lost in space more than 50 years ago
Their oxygen was leaking into space.
He insists it's not a fetish.
It could be underwater by 2056.
It's solved a decades-old mystery.
Scientists claim your brain experiences a 'surge' in activity when you experience your final moments.
He's unlocked people’s biggest fear
They've only ever been spotted 100 times.
Researchers made two exciting finds.
We will experience a close encounter.
It's also getting smaller over time.
The volcano spews gold into the air daily.
Geologists made a fascinating discovery.
He took viewers down memory lane with photos from when he was born to now.
They may look pretty in the night sky, but life on Earth would be chaotic.
He even played gravity-free ping pong.
This is only the third piece of evidence for the civilisation having their own alphabet.
Maybe best to stick to bottled water from now on.
There is a unique way of accessing it.
It's kicking off this year's summer solstice.
These are some of the scariest places on Earth
