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TIL that ants will refuse “medical” help from their colony if they know they are mortally wounded. Rather than waste the colony’s resources and energy on futile rehabilitation, the wounded ant flails its legs, forcing help to abandon them.

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awLwN TIL about Snorri Thorfinnsson, the first European to be born in North America. He was born near modern-day New England around the year 1000.
D1LED TIL that the confusing and maze-like layouts of stores like IKEA is called "The Gruen Transfer", and is meant to force shoppers to see more merchandise than they planned. It is named after mall architest Victor Gruen, who actually hated such manipulative techniques.
9Yv8m TIL Boston Celtics legend Bob Cousy rejected a hotel room in 1950 as teammate and first African-American in the NBA Chuck Cooper was denied a room due to the policies of then-segregated Charlotte NC. Cousy insisted on travelling with Cooper on a cramped overnight train instead.
wLW7o TIL: The Grand Canyon was formed not by the Colorado River cutting down into the landscape, but the landscape rising up and the river roughly maintaining its altitude above sea level
4an6 TIL that the term “Big Bang theory” was first coined by astronomer Fred Hoyle on a BBC radio programme in March 1949. Hoyle was a prominent critic of the theory.