The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
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The Earth's atmosphere weighs about 5.5 quadrillion tons.
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Indoor pollution is 10 times more toxic than outdoor pollution.
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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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Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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One ragweed plant can release as many as one billion grains of pollen!
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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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