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EntertainmentYou probably did not know: Gunpowder was born during the making of elixir
Everyone loves fireworks - light, colors and of course loud bangs. But the history of fireworks is not just a celebration.Video: History of inventing gunpowder
Chinese chemists accidentally invented gunpowder when looking for ways to make drugs that help immortal humans in the 9th century.
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Can carp live 10 years in a tank without feeding?
Why do Italy and Switzerland have to redraw the border?
Japanese bullet train accident-free for 60 years
The world's most crowded apartment building: Can accommodate up to 30,000 people, the view inside is overwhelming
World's oldest wine jar contains cremated human bones
America catches strange signal from 1.3 billion light years away from Earth
Two black holes closest to Earth discovered, of a kind never seen before
Solar sails help spacecraft reach Mars in 26 days
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