› added 10 years ago

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TIL roly polies (pill bugs) aren’t bugs at all! They’re land-dwelling crustaceans!

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via reddit.com

JYNb4 TIL that Robert A. Heinlein is credited with popularizing the phrase "pay it forward."
KOmGJ TIL the period 1955-1972, the development of nuclear rocket engines in the USA began with the "Rover" project. The first experimental nuclear engine was named "KIWI" and experiments were performed on it until 1964. They constructed a compact nuclear reactor with U235 carbide in a graphite housing.
E1E0X TIL the first airplane dogfight was between two American mercenaries on opposing sides in the Mexican Revolution. Both men had orders to kill, but neither pilot wanted to harm the other, so they exchanged multiple volleys of pistol fire, intentionally missing before exhausting their ammunition.
b6LX7 TIL that 2025 = (20 + 25)^2 = 45^2 which is neat, as 25 is also a square number.
VBYyB TIL: It's estimated that the Kool-Aid Man is 6 feet tall with glass 3.6 inches thick. Without liquid, he'd weigh 5,800 lbs. But when filled with 607.6 gallons of liquid, he weighs in at 11,000 lbs which is roughly the same weight as an elephant. OH YEAHHHH!