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TIL A star called Betelgeuse will supernova “soon” and becomes Earths second sun for 2 weeks

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LkMa0 TIL Scientists put slime mold onto a model of a map of Tokyo, with food representing urban centers. After a day, it created a network almost identical to Tokyo’s actual rail network. Human designers created that network to be as efficient as possible; slime mold did the same, but without a brain
nyvd TIL Bruce Willis dropped out of the Expendables 3 because he wanted 4 million dollars instead of 3 million, for four days of work.
b9gyj TIL When a patient is zapped with a defibrillator, their heart stops beating altogether - the two electric paddles attached to the patient's chest essentially 'reset' the heartbeat. Once the heartbeat stops, the heart starts afresh and begins beating normally again.
6EMoY TIL that pregnancy tests actually existed 3,500 years in Ancient Egypt! It even predicted the gender! Women would urinate on two bags; one filled with wheat and the other barley. If they grew, it means they're pregnant! If the wheat grew faster it's a girl. If the barley did, then it's a boy.
OoA56 TIL that hummingbirds go into a form of hibernation almost every night called torpor. This puts their body into a state of hypothermia in order to save energy and keep them from dying throughout the night while they can't feed.