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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In 2011, there were 3 known cases around the world of twins coming from different fathers.
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Shirley Henderson, the girl who played Moaning Myrtle (the ghost in the bathroom) was actually 37 years old when she played the character in the Harry Potter series.
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If NYC were its own country, and the NYPD was its army, it would be the twentieth-best-funded army in the world, just behind Greece and just ahead of North Korea.
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The world’s largest frog, the Goliath frog, can grow over 13 inches in length and can jump up to 10 feet in a single bound.
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