| http://www.w3.org/ns/prov#value | - A human's mucus membrane, used to smell, is the size of a postage stamp A Dog's mucus membrane is the size of fifty postage stamps Your skin is the heaviest organ Those stars and colours you see when you close and rub your eyes are called phosphenes The human brain stops growing at the ages of 18 Sneezes can travel over 100 mph 85% of the population can curl their tongue into a tube Only 7% of the
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