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TIL Hong Kong has the world’s most efficient subway system with a 99.9% on-time rate and the entire system is manage via an AI

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xVa9b TIL Helium was discovered on the Sun before the Earth. It's the only element to be first discovered somewhere other than Earth.
loMkK TIL that Manhattan Project nuclear physicist Alvin Weinberg was fired from his job for continually advocating for a safer and less weaponizable nuclear reactor using Thorium, one that has no chance of a meltdown.
16MyW TIL that the word "robot" was first used in a play titled "R.U.R.," written by Czech writer Karel Čapek in 1920. The term comes from the Czech word "robota," meaning "forced labor" or "drudgery."
0wQbp TIL a mantis shrimp can punch with the force of 1500 Newtons or over 300 pounds of force.
Lb5P TIL that in 2007 two teams of armed intruders stormed their way into a nuclear plant used to store weapons grade uranium from South Africa’s decommissioned arsenal. The coordinated assault was thwarted by an off-duty firefighter, a plant employee, and their dog.