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TIL baby spit backwashes into the breast during breastfeeding so the mother’s body can adjust the breastmilk composition based on the baby’s health

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Yobx TIL of Dr Thomas Midgley. He is responsible for adding lead to fuel and for the creation of Chlorofluorocarbons (CFCs) used in refrigerators. He is credited for doing more damage to the atmosphere than any other living organism ever.
0wNJj TIL All blue-eyed people have a single ancestor in common, born around 6,000 to 10,000 years ago.
rRLnd TIL of Turner D. Century, a Marvel villain motivated by a hatred of post-WW1 social changes. His gadgets include a flame-throwing umbrella, a flying tandem bicycle, and a "time horn" that induces unconciousness in those under the age of 65. He was killed after only three appearances.
1a5WV TIL a restaurant in New York doesn't employ chefs, but instead employs grandmas. Each day, a different grandma from around the world designs her own menu.
e01NJ TIL Astronomers at the Mount Wilson Observatory sketch sunspots every day, continuing a tradition started by Galileo. The drawing can take anywhere from 10 minutes to three hours, depending on the solar activity