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Til that fingernails serve to enhance sensation and precise movements of the fingertips through the counter-pressure exerted on the pulp of the fingers by the nails.

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xVlW7 TIL that during WWII, the large crosswelded metal beams that covered the beaches of Normandy on D-day are called Hemmbalken, and were supposed to wreck landing craft that were expected to attack during high tide. The Allies instead charged while exposed during low tide.
Qemp TIL George Clooney’s Satellites have Captured Piles of Bodies and Mass Graves in Sudan
XE50D TIL that on his 20th birthday, comedian Bill Murray joked about having two bombs in his luggage but instead was caught smuggling ten pounds of marijuana. He was convicted and sentenced to probation.
kPdB TIL Bill O'Reilly doubled down on the ‘tide goes in’ argument… against Stephen Hawking
04kp TIL there is a “Redundancy Theory of Truth”, the belief that saying something is true is meaningless; e.g. “It is true that 2+2=4” means the same thing as “2+2=4”. Thus “truth” is a construct of language devoid of meaning. This solves the famous Liar Paradox (“This sentence is false.”)