Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
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The Earth's atmosphere weighs about 5.5 quadrillion tons.
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Pumice is the only rock that floats on water.
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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
Iron weighs more after it rusts.
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For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
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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.
13