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TIL: John Anthony Walker, a US Navy officer who reported secrets to the Soviet Union for 18 years. He got his son involved, and even tried to involve his daughter. He was finally exposed when his ex-wife reported him. When asked about his spying, he said "KMart has better security than the Navy".

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8eEyG TIL unprotected sex with an HIV-positive person who has acute HIV infection could carry a transmission risk of up to 2% (the equivalent of 1 transmission per 50 exposures) for receptive vaginal sex and over 20% (equivalent to 1 transmission per 5 exposures) for receptive anal sex.
e55k TIL that during WWI, Woodrow Wilson kept a flock of 48 sheep on the White House lawn to save money on groundskeepers. The sheep also earned $52,823 for the Red Cross through auction of their wool.
l5nV TIL George Washington and Samuel Adams, both considered to be leaders of the American Revolution, refused to join a political party because they believed the idea would divide Congress. They’re instead only identified as Whigs, a common name for those supporting independence.
7rRRr TIL: The Cricket As A Thermometer...Dolbear’s Law states that if you count the number of time a cricket chirps in 15 seconds, and add 40, it will give you (roughly) the temperature in degrees Fahrenheit.
EgVMV TIL in 2014, the owner of Samuel's Sweet Shop died and his family struggled to keep the store open. So the owners friends, Actors Paul Rudd (Ant Man) and Jeffery Dean Morgan (The Walking Dead) bought it and have been co-owners ever since