The Earth

If we were able to dig through the Earth, at what point would you stop digging down and start digging up? © Getty Images

If we were able to dig through the Earth, at what point would you stop digging down and start digging up?

Why isn't the Earth a perfect sphere? © Getty Images

Why isn’t the Earth a perfect sphere?

How to stop a volcano

How to stop a volcano

Plastic bottles and general rubbish washed up by the sea litter the beaches in Prestwick, Scotland © Christopher Furlong/Getty Images

13 things you can do on Earth Day (or everyday) to help the planet

Could we stop an asteroid from hitting Earth? © Getty Images

Could we stop an asteroid from hitting Earth?

Does continental drift affect the climate? © Getty Images

Does continental drift affect the climate?

Will Europe get more hurricanes in the future? © Getty Images

Will Europe get more hurricanes in the future?

How much does Earth’s atmosphere weigh? © Getty Images

Everyday science

How much does Earth’s atmosphere weigh?

What is a superman? © Getty Images

What is a supermoon?

Do rising sea levels mean mountain elevations will need to be adjusted? © Getty Images

Everyday science

Do rising sea levels mean mountain elevations will need to be adjusted?

What would happen if we blew up the Moon? © Getty Images

What would happen if we blew up the Moon?

How hot could Earth get before it’s uninhabitable for humans? © Getty Images

How hot could Earth get before it’s uninhabitable for humans?

What if Earth had two moons? © Getty Images

What if Earth had two moons?

The thought experiment: What would happen if the supervolcano under Yellowstone erupted? © Getty Images

The thought experiment: What would happen if the supervolcano under Yellowstone erupted?

Why is the Moon moving away from us? © NASA

Why is the Moon moving away from us?