How the world’s deepest hole was dug

Learn the science behind digging a giant hole.

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

Some people think that the seas hold the key to protecting the planet.

Earth’s first crust looked surprisingly like today’s © ...

Two contrasting visions of humanity’s future in space

Get to grips with groundwater and discover where it comes from