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TIL that the 1983 United States Invasion of Grenada was planned using a tourist map and a copy of The Economist

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yl5M TIL that there is a medical condition named akinetopsia where you cannot perceive the motion of objects but can still see acutely and recognize objects normally. Everything seems to be frozen in time only to “jump ahead” in time and freeze again.
VB77G TIL Japan’s “proof of parking” rule is a regulation requiring car owners to provide proof of a designated parking space before registering or purchasing a car.
nWl9B TIL about the South African Black Rain Frog that looks like an angry avacado and fills itself up with air to appear rounder, like a pufferfish, when feeling threatened.
kOxBE TIL that you have drastically less time to escape a fire in a newer house than an older house (due to newer furniture and structures burning faster).
9YpkX TIL A professor at Indiana University launched a system of gaining experience points through classwork instead of giving out traditional grades.