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TIL of the Canal of the Pharaohs. A canal that linked the Red Sea to the Mediterranean 2,000 years before the Suez was built.

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Lklm TIL wearing sunglasses makes you more susceptible to becoming sunburned. Sunlight stimulates the optic nerve and warns the pituitary glad. This results in the release melanocyte stimulating protein in an attempt to prevent burns
W7Q9Y TIL: The US Navy used Xbox 360 controllers to operate the periscopes on submarines based on feedback from junior officers and sailors; the previous controls for the periscope were clunky and real heavy and cost about $38,000 compared to the Xbox 360 controller’s cost of around $20.
Ry66 TIL of the Behistun Inscription. Much like the Rosetta Stone, which was crucial in deciphering hieroglyphics, the Behistun is a multilingual inscription that was the key to decoding cuneiform. It told the story of King Darius’ struggle for power as well as his conquests in Mesopotamia and Persia.
78geZ TIL that the smallest fish in the world, the Tiny Goby, rarely grows longer than half an inch. Despite this, they are so abundant that they can support an entire fishery
nbo9 TIL of Harold Hering, a nuclear missile crewman who was kicked out of the military for asking “How can I know that an order to launch my missiles came from a sane president?”