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TIL one 5th of all mammal species are bats, and their ancestors appeared at the time of the dinosaurs

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LQnV TIL a star named s2 has the fastest known ballistics orbit; it orbits Sagittarius A at 11,000,000mph (2% of the speed of light) and it is also accelerating.
dYyE TIL Deer poses the most danger to humans out of all mammals living in North America
wodQJ TIL that not everyone hears inside themselves. The condition of loudly hearing your own breathing, voice, and bodily functions is called Eustachian Tube Dysfunction.
WkXJ8 TIL the pink fairy armadillo is barely half a foot long, and here is one on video in reduced sunlight foraging around in the sand for roots and grubs on a rural road, and luckily some passersby were able to film it in action. It is native to South America.It mostly active at dawn, dusk, and night.
Rvx7 TIL a UK village redesigned traffic flow in its town center to eliminate all traffic signs and signals. Since the redesign, the accident rate dropped, economic activity increased, and one citizen noted, “I think we’re all being kinder to one another.”