"TIL that four young people drowned in a narrow passage in an underground cave in Provo Utah 2005. They think one person tried to turn around and the others were unable to pass her. They knew the cave was unsafe."

"TIL of the Boy Scout Nuclear Science Merit Badge. The requirements to receive the badge include building a Geiger counter, planting irradiated and nonirradiated seeds, and visiting an accelerator (research lab) or university where people study the properties of the nucleus or nucleons"

"TIL that the story of Popeye eating spinach due to a misplaced decimal point over reporting its iron content is a myth. The correct iron value was already well known and nowhere did Popeye mention eating spinach because of its iron content"