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TIL there was a very unusually high number of put/call options on United and American Airlines stock before 9/11, no other airlines saw this activity

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JY9Bj TIL: Yesterday (July 4, 2020 at 0634 CDT) was Earth’s Aphelion day, meaning we were the farthest we’ll from the Sun this year. The next Perihelion (the closest we are) will be January 2, 2021 at 0750 CDT.
ZpPeo TIL Rhoda Abbott, 39, was the only woman aboard Titanic to survive going into the freezing water- every other female survivor was lowered in a lifeboat- and the only woman aboard after 2:05 A.M. to survive. Abbott swam to Collapsible A and climbed aboard, but lost her 2 teenage sons in the chaos.
Y7xPB TIL there is a large Dietz & Watson deli meats recall
p8ra8 TIL of the Fresnel lens, a specially crafted type of lens commonly used in lighthouses. Its design allows for a large aperture and short focal length without requiring the lens to be massive and heavy like a traditional convex lens. It also looks like a work of art.
grWvX TIL Shampoo was introduced to Britain in 1814. The Bengali surgeon Sake Dean Mahomed opened the Isles' first shampoo bath in Brighton that year and promoted the practice as able to cure many diseases and give full relief when everything else failed.