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TIL pitcher plant leaves are an example of convergent evolution, and they evolved independently at least four separate times.

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YpyDx TIL: In 2010, a boa constrictor was shown to have reproduced asexually via parthenogenesis. This is only the third genetically confirmed case of consecutive virgin births of viable offspring from a single female within any vertebrate lineage.
VMYvQ TIL that NFL players where not compelled to stand for the anthem until 2009 when the US-ARMY began paying the NFL for “acts of patriotism”
rNGNo TIL 45% of people only have two bones in their pinky toe
M71P8 TIL Many hotels including Hilton and Marriott collect guests’ used soaps, scrape the hair and stuff off, then melt them down to make new soaps.
9Gy7 TIL in 1923, a Mississippi association developed an influential set of recommendations about street-sign shapes whose impact is still felt today. The recommendations were based on a simple, albeit not exactly intuitive, idea: the more sides a sign has, the higher the danger level it invokes.