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TIL a monarch butterfly's antennae have a number of important functions including sensing pheromones, detecting water vapor, locating food and navigating.During migration, in particular, antennae are necessary for proper time-compensated solar compass orientation when travelling very long distances.

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LyP TIL John Pemberton’s original recipe for Coca-Cola was both alcoholic and contained cocaine, and when forced to change in 1886, he accidentally added the carbonated water to base syrup.
69AWY TIL about the 1985 Manchester Airport Disaster, where a plane caught fire during takeoff, and unclear and inadequate evacuation procedures, combined with jammed exit doors, led to the death of 55 of the 137 people on board
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AB8B TIL Samaritans still exist, but there are only ~800 left comprising 4 extended families
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