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REAL AND UNKNOWN FACTS

• If an average human scrotum were stretched until all its wrinkles were smoothed out, it could hold a basketball.
• Molecularly speaking, water is actually much drier than sand.
• Human tonsils can bounce higher than a rubber ball of similar weight and size, but only for the first 30 minutes after they've been removed. 
• Fish have "dandruff" caused by flaking skin, and it is impossible to filter all traces of it from drinking water.
• Moths are unable to fly during an earthquake.
• When in heat, female hippopotami secrete an oil with a flavor similar to strawberries. Kalahari bushmen use the oil to make flat-bread treats for children
• Ingesting small doses of ink over an extended period of time will change your eye color slightly. 
• When subjected to an electric current of at least 50 volts, a cat's tail always points toward the north.
• Scientists estimate that sleep lost due to daylight saving time reduces the average lifespan by nearly two full months.
• Female black cats can actually see their shadows at night.
• Glamorous movie star Brad Pitt once had a summer job posting warning signs at coal mine entrances.
• In the weightlessness of space a frozen pea will explode if it comes in contact with Pepsi.
• The rhesus monkey is the only animal that can be taught to hum a tune.
• The Boeing 747 is capable of flying upside-down if it weren't for the fact that the wings would shear off when trying to roll it over.
• Smearing a small amount of dog feces on an insect bite will relieve the itching and swelling.
• Polar bears can eat as many as 86 penguins in a single sitting.
• It is physically impossible to urinate and give blood at the same time.
• Constipation kills nearly twice as many people as diarrhea, mainly because the former mostly afflicts the old and weak while the latter mostly affects young, strong children.