Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
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During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
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A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
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0.3% of solar energy from the Sahara is enough to power the whole of Europe.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
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