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TIL that all curling stones used in the winter Olympics come from Ailsa Craig in Scotland

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via reddit.com

VBAwG TIL Flossing and good oral hygiene can reduce memory loss
1G0d TIL there was a man still alive in 1963 who had viewed Abraham Lincoln in an open casket.
9EYQ TIL that the Junípero Serra High School JV football team recorded a historically bad season in which they failed to win a game or even score a touchdown yet they never attempted to start their backup quarterback. That backup quarterback they refused to start is 4 time Super Bowl champion Tom Brady.
8aM6a TIL that shark skin is made up of hundreds of rows of small teeth. When flattened through forward movement, they create tiny vortices that reduce drag, turbulence and noise.
LkVJ0 TIL of the "Zone of Silence" in central Mexico. Radio signals not working, compasses spinning out of control, and several meteor craters have all been observed there.