When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
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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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German scientists claim to have evidence that suggests that our universe may exist inside of a computer simulated Matrix.
18
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
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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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Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Scientists are now able to grow 'beating' heart tissue in a lab!
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Each day, up to 150 species of life become extinct.
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