Planet Earth

Nuclear detectives © Getty Images

Nuclear detectives

Why is molten lava often covered with zig-zag patterns? © Getty Images

Why is molten lava often covered with zig-zag patterns?

Why doesn't lightning strike straight to Earth? © Getty Images

Why doesn’t lightning strike straight to Earth?

Why can't we just fill in the ozone hole with man-made ozone? © iStock

Why can’t we just fill in the ozone hole with man-made ozone?

What causes waves? © iStock

What causes waves?

Do fires ever happen deep underground? © Getty Images

Do fires ever happen deep underground?

Could you fit solar panels to wind turbine blades? © iStiock

Could you fit solar panels to wind turbine blades?

If many coastlines are eroding, are there any on Earth growing? © Getty Images

If many coastlines are eroding, are there any on Earth growing?

When is the next El Niño? © iStock

When is the next El Niño?

Which animals have the longest pregnancies? © Getty Images

Where is the safest place to stand outside in a thunderstorm?

Is global warming preventing the next ice age? © Getty Images

Is global warming preventing the next ice age?

How much pollution is caused by waste from energy companies? © iStock

How much pollution is caused by waste from energy companies?

How did the Giant's Causeway form? © Getty Images

How did the Giant’s Causeway form?

Does rainfall cause autism? © iStock

Does rainfall cause autism?

Does smoking cause air pollution? © iStock

Does smoking cause air pollution?