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TIL large schools of fish can accidentally trap themselves in a small area with no way out while attempting to evade predators. If there are too many in a small or enclosed area they can deplete the water of oxygen and they will asphyxiate by the thousands.

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W7LJX TIL, Jupiter's upper atmosphere is much hotter (~425°C/800°F) than originally predicted and much hotter at the poles than the equator. Jupiter's magnetic field creates enormous auroras at the poles that heat up the rest of the planet.
v1yMr Jerk drivers who merge at the last minute are actually more efficient. However, they are still jerks.
x6Ol7 TIL prairie dogs have their own language to communicate incredibly specific information like what color shirt a guys wearing or how fast an animal is approaching. They even have a cute jump-yip that looks like they’re throwing their hands in the air, celebrating when they’re safe from danger
1Ykr TIL that Marlon Brando refused his Oscar for The Godfather as a show of support for the native Americans in the film industry.
e0AJ5 TIL; the dingy blue lights in some public toilets is to prevent addicts from injecting heroin as the blue light makes it much more difficult to see veins