Planet Earth

Do other planets influence Earth’s tides? © Getty Images

Do other planets influence Earth’s tides?

Do trees reduce air pollution levels? © Getty Images

Do trees reduce air pollution levels?

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

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

Is climate change going to make flights bumpier? © Getty Images

Is climate change going to make flights bumpier?

Why are some clouds flat underneath? © Getty Images

Why are some clouds flat underneath?

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 ozone depletion worse over Antarctica? © Getty Images

Why is ozone depletion worse over Antarctica?

Could global ice melt affect the Earth's tilt? © Getty Images

Could global ice melt affect the Earth’s tilt?

How did we first accurately identify rocks? © Getty Images

How did we first accurately identify rocks?

What would happen if the sea level rose by two metres? © Getty Images

What would happen if the sea level rose by two metres?

Does storing data on the 'cloud' help the environment? © iStock

Does storing data on the ‘cloud’ help the environment?

What is being done to preserve Pompeii? © Getty Images

What is being done to preserve Pompeii?

The death of Julius Caesar, 1805-1806, by Vincenzo Camuccini (1771-1844) © DeAgostini/Getty Images

Are we really breathing Caesar’s last breath?

Why can’t we reach the end of a rainbow? © Getty Images

Why can’t we reach the end of a rainbow?

Are wood-burning stoves environmentally friendly? © Getty Images

Are wood-burning stoves environmentally friendly?