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TIL that Helicobacter pylori is the only bacterium known to cause cancer. It is responsible for an estimated 89% of all gastric cancers and is linked to the development of 5.5% of all cases cancers worldwide.

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e0pn6 TIL in 1982, a man named Larry Walters attached 45 helium-filled balloons to a lawn chair and took flight to a height of 16,000 feet. He did so because he was denied entry in the US Air Force due to poor eyesight.
8DgK TIL Triton, the largest moon of Neptune, is the only moon in our solar system with a retrograde orbit - an orbit in the opposite direction its planet, and is thus thought to be a dwarf planet that Neptune caught from the Kuiper belt.
P1kYL TIL a Giffen good is a product that people consume more of as the price rises and vice versa, violating the law of demand.
mMxx TIL that rice does not need to be grown in water, but since it can survive it, it is done so that weeds and other pests can be controlled, leading to higher yields.
4kag6 TIL that the highest point in Florida is Britton Hill, at 345 feet of elevation.