› added 5 years ago

145

TIL of Event 2O1, a conference held last October with medical, business, and government leaders that predicted a Coronavirus outbreak.

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8eeBa TIL that San Diego County is home to 18 Native American tribal reservations, the most of any county in the United States.
6EVNX TIL that Harry Truman’s official memorial isn’t a physical one like the Lincoln Memorial, but rather is a federal scholarship for grad school worth $30,000 that’s given out to college juniors interested in public service.
dG1j TIL Pizza boxes cannot be recycled if they have any bits of pizza on them.
neyAY TIL that if you dug a tunnel through the center of Earth, and jumped in, and let gravity pull you through it will take you to reach the other side of the planet 42 minutes more or less
kXY5 TIL the difference between a sprocket and a gear: a gear meshes with other gears, while a sprocket meshes with a chain, belt or other kind of perforated material