› added 8 years ago

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TIL that “Human and Animal blood” make up 1.3% of total US exports. Exports of blood bring in $18.9 billion of revenue.

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via reddit.com

YxDx TIL that when British warships enter the Thames they are required to present a barrel of rum to the Constable of the Tower (the man in command of the Tower of London) in the ‘Ceremony of the Constables Dues’.
781oO TIL about Levi Coffin. Born 1798 in North Carolina, he and his wife Catherine are credited with helping thousands of slaves escape to Canada. Some called him the "President of the Underground Railroad."
9e46 TIL that the roar from the T-Rex in Jurrassic Park was a combination of a baby elephant’s squeal, an alligator’s gurgling, and a tiger’s snarl.
9jZX TIL of Francis P Hammerberg. During salvage efforts in Pearl Harbor, two Navy Divers became trapped when a piece of wreckage collapsed. By tunneling through 20’ of mud and steel he saved both men but became trapped himself in the wreckage. He died 18 hours later and was awarded the Medal of Honor.
j6bn TIL a scientist allowed 78 bees, wasps and ants sting him to produce a ‘pain index’. he described the bullet ant’s sting as like fire-walking over flaming charcoal with a 3-inch rusty nail grinding into your heel.