A man called Dean Karnazes ran 350 miles in 80 hours with no sleep, ran a marathon in the South Pole in -25 °C temperatures without snowshoes, and ran 50 marathons in 50 states in 50 days.
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Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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The oldest living person smoked cigarettes from the age of 21 to 117.
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When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
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In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
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The world's longest traffic jam took place in Beijing, China. It was over 60 miles long and lasted 11 days.
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