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0dpY5 TIL that before the world's first nuclear explosion, the chance that the earth would be vaporized by the explosion was estimated at "slightly less than 3 in 1,000,000".
7r5VO TIL J Robert Oppenheimer, inventor of the A-bomb, resigned as leader of Los Alamos. The program had shifted focus to thermonuclear weapons, and Oppenheimer vehemently opposed the hydrogen bomb and similar weapons on the grounds that they were more destructive than mankind could responsibly control.
N7N9E TIL In 1991, the Chinese government made developing e-bikes an official technology goal. Electric bike sales went from 150,000 in 1999 to 21 million in 2007, a growth in sales that is unmatched by any other mode of transportation in China