› added 12 years ago

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TIL that most of the walk buttons at NYC intersections serve no purpose. They are “placebo buttons” and do not make a walk signal occur faster. Any benefit from them is only imagined.

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J1r51 TIL The myth of Achilles being invincible except for his heel wasn't originally part of Achilles' story, but a later addition
M7jZb TIL that naturally 1 out of every 6400 hydrogen atoms in water is a deuterium atom. It forms a "heavy water" molecule with a slightly sweet taste and is safe in low amounts, but you will die if more than 50% of your body's H2O is replaced by D2O.
g9a7 TIL The explosive power of a duck’s erection can break through glass.
dPB8 TIL John Krasinski first met Matt Damon right after Matt filmed a kissing scene with Emily Blunt, John’s wife. Matt’s first words to John were “Hey man. I was just totally tonguing your girl.” They are now good friends.
EgdGo TIL Panther is not a single species but is a term that is most often used to describe a black jaguar or a black leopard.