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TIL the first ever vsauce video was a shitpost about E3 2011

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780nL TIL that Vanadium is one of the most effective spermicides discovered. Most spermicides irritate the vaginal wall. Not vanadium. It sneaks inside the sperm and snaps off the tail so it can't swim without external irritation. However, it also messes with blood sugar levels and turns the tongue green.
M71gV TIL the world's oldest terrarium / sealed bottle ecosystem has been thriving since 1960. The 10-gallon bottle is like a mini Earth. It has only been opened once in 53 years to add a bit more water (in 1972). Otherwise it has been sealed without fresh water or air.
EyLx TIL America’s poverty line was designed with the thought that every American household had a housewife who was a skilled cook, and has only ever been adjusted for inflation.
b9oaa TIL my Gmail has two step authentication but Hawaii's nuclear attack warning system does not.
edrg TIL in 1976, residents of a small town in Ohio began receiving threatening anonymous letters. Thousands of letters were sent and some contained personal details. The main suspect was jailed but released after three years when he himself was sent a letter in prison. The case remains unsolved.