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TIL: Arsenic was sold as a beauty product in the late 1800s, women would nibble on wafers or even wash with the poison, hoping to achieve an ideal complexion that was free of “freckles, black-heads, and pimples."

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4XwWJ TIL that, on May 13, 1974, seventy three children were struck with a mysterious illness at a Florida elementary school. Suspecting a gas leak, the Dept. of Public Health sent investigators. Dr. Nitzkin, an epidemiologist, discovered it was mass hysteria: one child fainted and the others panicked.
GYJlj TIL the lifespan of blue whales is estimated by their earwax, which builds up in seasonal cycles somewhat like the rings of a tree.
M7J5B TIL the loud thumping air pressure changes in a moving car when a single window is rolled down is called Helmholtz Resonance. This also occurs when air is blown into the mouth of an empty bottle.
R5Dy7 TIL that in 2011 a resident of Atherton, California called police to report a strange light in the sky. Police were able to determine that the strange light was the moon.
Vw4D TIL there was a town that was underwater for 25 years and resurfaced in 2009