› added 6 years ago

152

TIL it is illegal in many US states for teenagers to drive with multiple friends

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jNpwv TIL Thomas Jefferson had observed unseasonably mild temperatures in Philadelphia on July 4th, 1776.
XgxD TIL that Dan Aykroyd is a 4th generation Spiritualist, his great-grandfather was a mystic, and his father wrote a book called “A History of Ghosts.”
9wXdX TIL that smoke detectors themselves (not just the batteries) should be replaced every 10 years.
Wk5Kd TIL in a relatively massive scientific discovery around 1676, Danish astronomer Ole Roemer was the first to calculate that light travels at a finite speed. He studied Jupiter's moons and determined their eclipses happened sooner than predicted when the Earth was closer to Jupiter.
awmb TIL that using “Biquadric Finger Counting” you can count to 12 on one hand and 144 on both.