Adam Rainer is the only person in recorded history ever to have been both a dwarf and a giant. At age 18 he measured 4 feet 8.3 inches. When he died at age 50 he measured 7 feet 8 inches.
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The Caspian Sea is also classed as the world's largest lake.
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Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
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The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
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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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