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TIL that a microscopic inorganic flash of light, also known as a zinc spark, is released by the human egg upon fertilization when billions of zinc ions are exocytosed from its surface.

Read more nature.com

via reddit.com

kJrB TIL that Johnny Depp, David Bowie, Victoria Beckham, Tina Fey, Amy Poehler, Ricky Gervais, Will Ferrel, and many other celebrities have all guest starred on Spongebob Squarepants.
Bg7ZW TIL: In the 16th century, the Osculum Infame was the name of a witch's ritual greeting upon meeting the devil, which involves kissing his butt hole or "other mouth" and usually followed with feasting. In some cases, the role can be reversed where the witch receives the kiss.
yQ0mV TIL that in the last days of the war, South Vietnamese major Buang-Ly on a stolen plane with his family (wife and 2 children) dropped a note on USS Midway pleading to allow him to land. Comd. Chambers gave orders to push overboard millions of dollars' worth of helicopters to make room for landing.
78lBp TIL Active Listening is listening with the intent to understand the other person fully rather than listening to respond. However, it was criticized by John Gottman's "The Seven Principles for Making Marriage Work" as being of limited usefulness.
vnMx TIL Kim Jong Un was caught with a bondage pornography magazine when he was in school in Switzerland.