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TIL Frederic John Walker aka Johnnie Walker was the most successful anti-submarine warfare commander during WWII credited with 17 U boats destroyed. Walker's last duty was protecting the fleet from U-boats during the Normandy landing before his natural death attributed to overwork and exhaustion.

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8eYwP TIL the FBI has undercover Cessna that have tech to mimic a nearby cell tower and force everyone’s phone in the area to connect to it, allowing them to listen to calls, see texts and all data .
lobr TIL the swedish former physical education teacher Richard Juhlin has the best nose for wine (champagne specifically) and in a now infamous blind tasting in 2003, arranged by Spectacle du Monde, he correctly identified 43 of 50 wines. The one who came in second correctly identified four.
b6ndQ TIL that an adult panda absorbs 54.8–66.1 mg (0.846–1.020 gr) of cyanide a day through its diet. To prevent poisoning, they have evolved anti-toxic mechanisms to protect themselves.
VXjp TIL that the best selling mystery novel of all time, written by Agatha Cristie, was originally titled Ten Little Niggers. It sold over 100 million copies.
awloZ TIL about Chocolate Blooms. When your chocolate is covered in white/grey powder, it means it has either had a Sugar Bloom or Fat Bloom. And it's still safe to eat! But means the chocolate has been stored incorrectly.