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TIL that traditional Japanese sword forging techniques produced a uniquely layered steel microstructure that was key to the legendary balance of sharpness and resilience in samurai swords

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WkOe8 TIL that the 400 richest Americans could literally solve the world’s problems, by distributing their wealth, and still be billionaires once they were finished.
mxnRp TIL: all raindrops have a speck of dirt inside them. Raindrops can only form when they have something to condense on to, thus the need for a particle of dirt.
R7eO1 TIL about Bertha Lutz, a Brazilian zoologist who specializes in studying poisson dart frogs that was also a leading figure in the Pan American feminist movement who signed the UN Charter for Brazil and where she also fought for women’s suffrage.
AoNa TIL that Verne Troyer was raised Amish and struggled with alcoholism and cocaine addiction.
5YAj9 TIL A teenager, Peter Roberts invented a quick-release ratchet. He sold his patent to Sears for $10,000 who said that the invention was not worth very much and then went on to make $44 million selling the ratchet. He sued them for fraud and was awarded $1 million.