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When did Antarctica become a continent?Here's when Antarctica broke free of an ancient supercontinent.
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How did ancient people store food before refrigeration?Ancient people came up with a number of creative ways to store leftovers.
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What happened when the dinosaur-killing asteroid slammed into Earth?The asteroid that crashed into Earth 66 million years ago unleashed a catastrophic series of events.
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Why are vinegar and baking soda so good for cleaning?Why are common household items like baking soda and vinegar such good cleaning agents?
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What would happen if Earth suddenly stopped spinning?If Earth abruptly stopped spinning, what would happen to everything on it?
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Why does it hurt so much when you hit your funny bone?The funny bone is actually the ulnar nerve, which is responsible for transmitting information from the fingertips to the brain and back again.
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Why do mosquitoes buzz in our ears?Here's why mosquitoes buzz around our heads ... and our feet.
