› added 5 years ago

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TIL that Daniel Hale Williams founded the first black-owned hospital and performed the first successful heart surgery in the world!

Read more columbiasurgery.org

via reddit.com

OGG71 TIL that just less than a century ago, astronomers weren't sure that the universe expanded beyond the Milky Way. Edwin Hubble (for whom the Hubble telescope was named) definitively proved the universe was far more vast.
ADxG4 TIL Nike dropped Allyson Felix's 7 yr old sponsorship because she asked that she shouldn't be punished if her performance dropped due to childbirth. 10 months later she won a gold medal breaking Usain Bolt's world record for most gold medals in world championships history, with her daughter watching
4XG5N TIL That 16000 Hz Sine Waves are used by some grocery stores to deter teenagers after curfew. The reason these sounds work is because kids and teens hear them, but adults can’t. This is caused by the ears’ “age”. For people in their 30’s and older, they can’t hear these specific 16000 Hz sounds.
VV0p TIL that after Netflix threatened to move House of Cards S3 production when Maryland removed millions of dollars of tax benefits for filming, the legislature responded by threatening to use eminent domain to seize the production team’s assets, since they had already received millions in tax benefits
4dZN TIL In 2005, Kate Winslet joked that acting in a Holocaust movie guarantees an Oscar. Four years later, she won her first and only Oscar for her role in The Reader.