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TIL that the suicide rate of boys ages 15-19 grew by 30 percent from 2007 to 2015. Academic issues, depression, and lack of self worth were among biggest causes of life cut short.

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wL971 TIL of Princess Pingyang. At age 28, she built & led a rebel army that won the 1st victories of her father's rebellion and helped found their dynasty: the Tang. When she died in 628 AD her brother, Emperor Gaozu, went against gender norms of his day and insisted a state military funeral for her.
Mb50 TIL that night vision goggles are green because the human eye can differentiate more shades of green than any other color.
YNdG TIL By the time a person in the United States is 65 years old, he would have seen an estimated two million television commercials
6NLm TIL that in the days after 9/11 Walmart purchased all available stock of American flags gaining a monopoly on the market.
1QOr TIL Sergeant Stubby is the only dog promoted to sergeant through combat. He served in 17 battles, warned his regiment of gas attacks and incoming artillery, located wounded soldiers, and held a German soldier by his pants until other American soldiers found him