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TIL: The US has been quietly converting to the metric system and has already gotten pretty far

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PJdw TIL the primitive immune system of a horseshoe crab makes them useful to humans. Every drug certified by the FDA must be tested using an extract from their blood cells. Their blood is worth ~$15,000 a quart. A horseshoe crab can be bled, returned to the ocean, and after time, can give blood again.
dV1Q TIL there is a conspiracy theory that Andrew WK is actually fabricated piece of performance art, concocted by a secret organization and is actually “performed” by multiple people.
PGrn TIL that the airheads white mystery flavor is just the leftover flavorings that couldn’t make a full batch
7roXZ TIL that before artificial dentures were invented, teeth were pulled from dead soldiers to make dentures for the rich!
6XA7 TIL That if you live in a family with an income of around $75,000 you are richer than 95% of the planet and 99.99% of anyone who has ever lived.