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TIL about Pele's Hair, thin glass strands made from erupting lava

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VKn8 TIL that corn is a result of thousands of years of selective breeding by Native Americans. It was bred from a wild grain called teosinte, which is only a few inches long and barely edible.
mbQp TIL In 1774, Frederick the Great ordered Prussians to grow potatoes as protection against famine, but the populace were disgusted by them and refused. The king then planted “royal potato field” but allowed peasants to steal from it, which re-marketed the potato into a major food crop.
oRnKL TIL In 1988 the Polar Bridge Expedition, a group of 13 people, successfully skied from Siberia to Canada
44do TIL The character Mark Healy from Roseanne not only could do a dead on impersonation of Grover and Christopher Walken, but also died at the age of 32.
QJ7dM TIL — World Health Organization (WHO) recognizes "occupational burnout" as a syndrome resulting from chronic work-related stress, but does not classify it as a medical condition.