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656

TIL that crabs line up from biggest to smallest and exchange shells when a single new shell washes ashore.

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rNbd0 TIL the Kaktovik numeral system is a base-20 Alaskan numbering system
bwJZ TIL that some haunted houses are thought to be the result of dangerous safety hazards, like carbon monoxide leaks, which cause hallucinations.
YpwOA TIL Monarch butterflies migrating North take 3-4 generations to make it to their destination. Gen 1 does not get to its Northern destination; Gen 3 or 4 does. To return, Gen 3 or 4 flies the entire route South. Then Gen 3 or 4 begins flying N. laying eggs along the way that start Gen 1 migrating N.
WkbkL TIL about 78-year-old twin sisters Margaret and Marjorie Barthel — who were purposefully and lovingly feeding rats, nurturing an exponentially multiplying population of rats on the affluent Westside of LA, which experts believe ranged from tens of thousands to as many as a half-million Rats
b6a7 TIL there’s an open source solar energy collector that can be build from scrap for well under $100, using basic tools and skills