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TIL In 1963 there were only 417 bald eagles breeding pairs in the 48 states. They had been ravaged by the effects of the insecticide DDT. Today there are 72,000 individuals in the lower 48 states, and 143,000 including Alaska. They are the ultimate Endangered Species Act success story.

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9wpQr TIL that humans have the highest daytime visual acuity of any mammal, and among the highest of any animal (some birds of prey have much better). However, we have relatively poor night vision.
eDp4 TIL In September 1956 IBM launched the 305 RAMAC, the first ‘SUPER’ computer with a hard disk drive (HDD). The HDD weighed over a ton and stored 5 MB of data.
nM89 TIL That between the 50’s and 80’s big companies produced “Industrial Musicals” that were only for employees to boost morale. The Bathrooms are Coming is considered to be one of the best.
EgQWx TIL Helen Keller was as a cofounder of the ACLU
wLvgP TIL about John Morrissey, who went from being a famous gambler during the Gold Rush to a heavyweight boxing champ to the boss of the Irish mob to a New York senator to Grand Sachem of Tammany Hall, which basically controlled NY politics for the Gilded Age, all before dying at 47 years old.