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TIL At a radiology conference in 1974, Lee Rogers, a physician who had mistakenly swallowed a soda can tab during a basketball game, addressed the hazard to the medical community, which lead to a redesign of a non-removable tab that reduced untold amounts of litter and injury to humans and wildlife.

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R77D9 TIL there’s a species of cactus that lives so far north in Canada that it’s north of the southern edge of Alaska
X0e9r TIL that the longest perfectly straight stretch of the U.S. interstate highway system is on I-80 between Lincoln and Grand Island, Nebraska and is approximately 72 miles (116 km) long.
8a7oZ TIL that Louis Armstrong wore a Star of David pendant for most of his life, up until the day he died, to commemorate a Jewish family that had taken him in and cared for him as a child.
xodk TIL that “Sun Dogs” are an atmospheric phenomenon that can make it appear as if there are multiple suns in the sky.
R0Qa TIL With 150,000 post offices, India has the largest postal network in the world. However, it is not unusual for a letter to take two weeks to travel just 30 miles.