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TIL scientists are building a telescope with mirrors that are 8.4 meters across but less than 25 nanometers of deviation from a perfect parabolic curve

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Yvnx TIL during the Civil War, Lincoln suspended the writ of Habeas Corpus. This allowed for the arrest of those who expressed sympathy for the Confederate cause. Furthermore, it also prevented military officials from being convicted of false arrest, false imprisonment or search and seizure violations.
1aKR8 TIL about Ferret-legging, where contestants shove live ferrets down their pants, and the winner is whoever can stand all the biting and scratching for the longest time. The ferrets must have all their 34 teeth and all their claws. Neither ferret nor contestant can be drugged in any way.
7lNO TIL there have been almost 7,000 cases of whooping cough in California this year, affecting mostly unvaccinated children ages 7-16.
ZPZG TIL that Constantinople became Istanbul because people started referring to it as “The City” and the Greek phrase for “In The City” is pronounced “Is Tin Poli.” Over time, this became Istanbul.
OGB56 TIL the loudest human voice belongs to Annalisa Flanagan, a primary school teacher with the ability to shout the word "Quiet!" at 121.7 dB