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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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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The Earth's atmosphere weighs about 5.5 quadrillion tons.
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Out of all the senses, smell is most closely linked to memory.
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Some toothpastes and deodorants contain the same chemicals found in antifreeze.
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Indoor pollution is 10 times more toxic than outdoor pollution.
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Scientists are now able to grow 'beating' heart tissue in a lab!
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