Chemistry of the atmosphere

Mars was actually the first planet in the Solar System to have oceans. Hopefully Earth will not be the last.

The atmosphere

Learn how the atmosphere evolved over the last 4.8 billion years
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Fossil fuels

Fossil fuels are made from very dead and very squashed old animals and plants.
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The greenhouse effect

Never throw stones if you live in a greenhouse.
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Climate change

If you meet somebody new, talk about climate change. It really melts the ice.
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