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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Indoor pollution is 10 times more toxic than outdoor pollution.
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A ball of glass will bounce higher than a ball made of rubber.
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Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
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According to studies, men change their minds two to three times more often than women.
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