› added 7 years ago

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[TIL] That in addition Fire Department red and Police red and blue, some states reserve purple lights expressly for funeral procession escort vehicles.

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4XoQJ TIL the Seattle Center Monorail began operating 58 years ago and still uses their original trains.
GAe84 TIL about the "Singing Sand Dunes" phenomenon, where certain desert dunes emit a low-pitched hum due to sand grain vibrations under specific conditions
GkEE TIL Gingers don’t feel pain to the same degree that everyone else does. Redheads are less sensitive to electrically induced pain, but are more sensitive to thermal pain.
JyGV TIL every year, Finland increases in surface area by about 7 square kilometers per year because it is rebounding from the weight of ice age glaciers and rising out of the sea.
ney89 TIL the first photos that came back from Hubble were blurry and to fix that NASA gave it a new prescription lens