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TIL that there is a slow motion camera that can record 10 trillion frames per second. This is fast enough to actually see light travel from point to point.

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rNAKe TIL Baicalin, a flavonoid found in skullcap, regulates the dopamine system to control the core symptoms of ADHD, in addition to treating inflammation, fever, jaundice, and hypertension.
wopAo TIL that Murong Xi, emperor of the Later Yan dynasty of China during the Sixteen Kingdoms period, had sexual intercourse with the corpse of his deceased wife.
grxrA TIL about the Halifax Explosion, which occurred in December 1917 when 2 explosive-laden ships collided in the harbor of Halifax, Nova Scotia. 1,782 people were killed and 9,000 injured. At the time, it was the largest man-made explosion in history.
yQODw TIL the aviation industry always uses "deaths per km" to quote safety to the public, while internally insurers use "deaths per journey", where air travel is more dangerous than most other forms of transportation
v1lGD TIL that in 1582, a significant portion of the world went to sleep on the evening of October 4th, only to wake up a few hours later on October 15th. At the time, many believed that their lifespan was shortened by 10 days