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TIL Simply calmly treading the water in a rip tide can return you to shore in 3 minutes, because rip currents are really whirlpools, according to an oceanography professor's study that sensors to analyze the flow of wave water. (Source: nps.edu, 2010)

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GYgEN TIL that the United States invaded Canada in 1812. Former President Thomas Jefferson predicted that the "acquisition of Canada (..) will be a mere matter of marching", however, it went terribly, after a few months the entire Michigan territory had fallen.
4XWoJ TIL that animals don't just go into a long sleep during hibernation...
M7RGK TIL that the vaguely named vegetable oil is not derived from corn, wheat, or a variety of other vegetables but almost always soybean oil.
PYOwG TIL that the CIA has a secret Heart Attack Gun weapon that can shoot a small poison dart into a person to cause a heart attack almost instantly.
4XXNb TIL The suns diameter is 864,000 miles & There are 86,400 seconds in a day on earth.