Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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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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The Earth's atmosphere weighs about 5.5 quadrillion tons.
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Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
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One third of the electricity produced on earth is used to power electric light bulbs!
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A single speck of dust is half way in size between a subatomic particle and the Earth.
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Nearly 50% of the world's scientists are assigned to military projects.
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