› added 10 years ago

75

TIL spider web silk was once used for crosshairs in rifles.

Read more wikipedia.org

via reddit.com

X0ME8 TIL there are approximately 0.41 concussions per game of NFL American football.
8aVbK TIL: Canadian insurance companies run a cloud seeding program to prevent the formation of large hailstones and reduce the amount of insurance claims for hail damage
wKW TIL tennis players’ grunts offer the grunter an advantage. Not because the noise is distracting, but because it covers up the sound the racket makes when it hits the ball, making it difficult to judge how hard it’s hit and with what spin the ball has.
J1BWk TIL that the UK has a legal drug-drive limit of eight illegal drugs, to allow for accidental exposure to them
LkyBm TIL of Sheldon Yellen, the CEO of Belfor Holdings, Inc. He writes 9,200 employee birthday cards a year and explains the value of gratitude.