› added 9 years ago

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TIL A decade before the SR-71 first flew, the Military had a Mach 4.3 capable Ramjet created to test its own air defenses. It was so effective, it was cancelled to avoid embarrassing the military’s own air defenses any further. The man who designed it went on to create the SR-71 spyplane.

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wOrE TIL that despite moving at only 6.5 feet per minute on land, sloths are actually quite competent swimmers, and move 3 times faster in the water. They can even hold their breath for up to 40 minutes.
kOlng TIL that penguins, do indeed have knees.
Oo1wL TIL that Iceland has the highest number of authors per head, and one in ten icelandic people will publish a book in their lifetime
ZpKwB TIL that the city of Philadelphia, which was where Washington had to live when he was president, had laws in place that said any slave that lived there for more than 6 months would be freed. So, Washington set up a rotational schedule exchanging his slaves between states to prevent their freedom.
lov11 TIL in 1850 Milk in New York was so contaminated that caused 8000 infants deaths in just one year.