› added 3 months ago

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TIL ILS glide slope indicators work on exactly the same principle as visual approach glide slope lights - two overlapping, but different frequencies of light - it's just invisible for the ILS version

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awLY9 TIL that squirrels can lower their terminal velocity and turn their bodies midair, so they can survive super high falls
oRrVA TIL in 1915, San Diego hired a "rain maker" who used a secret mix of chemicals to "attract rain" for $10,000. It rained for most of January, destroying bridges, dams, and causing 20 deaths.
VMQRQ TIL WD-40's formula is a trade secret, and has not changed. To avoid disclosing its composition, the product was not patented in 1953, and the window of opportunity for patenting it has long since closed.
prXN TIL 6 companies control 90% of American broadcast media (FOX, CNN, NBC, WSJ, ABC, etc.)
8epAb TIL: Saddam Hussein invaded Kuwait in 1990, because of an insulting comment by one of its emirs.