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Can you actually get high from licking a toad?There's some truth to the urban legend that certain toads have psychedelic properties, but licking them isn't a good idea.
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Why does slicing onions make you cry?Here's why you may start tearing up while slicing an onion.
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What if Christopher Columbus had never reached the Americas?How would history have unfolded if Christopher Columbus had never reached the New World?
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Which planets are the youngest and oldest in our solar system?There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?
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What's the strongest muscle in the human body?Several muscles can claim the crown, depending on how you measure strength.
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What's the longest someone has been clinically dead — but then come back to life?When someone's heart stops beating, their brain cells start dying within minutes. But sometimes, they can still come back from the dead.
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Why do avocados turn brown so quickly — and are they OK to eat at that point?Why do avocados turn brown in a flash? The answer is in the air.
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Who discovered America?Christopher Columbus was far from the first person, and not even the first European, to reach the Americas.
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How long does DNA last?The world's oldest DNA comes from a 2.4 million-year-old ecosystem in Greenland. Will scientists eventually sequence even older DNA?
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