› added 7 years ago

332

TIL that airplanes can honk. They actually have a horn.

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via reddit.com

wo8PM TIL that northwestern Africa had a river running from the Atlas Mountains to the western coast of the continent. The river dried up sometime around 5000 bc.
7rBkZ TIL of Keith Sapsford, a stowaway on a plane, who died after falling out of the wheel compartment shortly before landing. His fall was accidentally photographed by an amateur, who didn’t realize it until he developed the photos
womo8 TIL in addition to being energy efficient, modern streetlights are frequently wirelessly connected, letting municipalities/utility companies know when their lightbulbs might need to get replaced.
gMPW7 TIL that there is no blue pigmentation in blue eyes. The eyes appear blue as a result of Rayleigh scattering, the same process that makes the sky appear blue.
P1V8w TIL that the Saudi dinasty, which unified Arabia and named the country after them, had to fight two other major dinasties over the control of Arabia, the Rashidis and the Hashemites, the Rashidis do not exist anymore but the Hashemites are kings of modern day Jordan