99percentinvisible.org

P1NML TIL Samuel Chalfant, a dentist who made dentures without patent approval, murdered Josiah Bacon, the royalty collector for Goodyear Vulcanite Company's patent on rubber dentures. After the murder, the company stopped enforcing the patent, and dentists were able to provide dentures without royalties.
dDvKE TIL that in the 18th and 19th centuries, cemeteries in Britain used "cemetery guns" to prevent grave robbing. These guns were set up near graves and were designed to discharge when triggered by a tripwire, stopping "body snatchers" who stole corpses to sell to medical schools.
DQEbD TIL the history of this iconic design known as "jazz"