› added 3 years ago

105

TIL About an "Engineers ring" - a ring of stainless steel or iron worn on the pinky to represent being a certified engineer.

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X0o6D TIL cockroaches can survive radiation because their cells don't divide constantly like human's. "Cells are most sensitive to radiation when they are dividing" and a cockroach molts at most once a week.
pY5GN TIL The average IQ difference between a parent and child is the same as the difference between siblings, about 12 IQ points. A parent with a high IQ will usually, but not always, have children whose IQs are somewhat lower than theirs but are still above the average for the general population
WZKL TIL Harper Lee and Truman Capote were childhood friends and neighbors while growing up in Alabama, and in To Kill A Mockingbird Scout’s friend Dill was inspired by Capote
e040J TIL that Orcas/Killer Whales are “apex predators”, which means no other animal feeds on them.
4XZpb TIL that Nazis ran brothels within concentration camps to motivate prisoners to work more. Over 35k women were forced into forced sex labour.