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TIL about Guy Tyler, who made hundreds of audio recordings of Native American languages. They provide an archive of languages in danger of being lost to erasure of native culture, as well as helped protect the sacred site at Ward Valley from becoming a nuclear waste dump [link to audio in comments].

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Rwx9 TIL that a study of film-goers heart rates shows that the “Here’s Johnny!” scene from The Shining is the scariest moment in film. Over entire movies, “The Exorcist” is the scariest, sending pulses up by 25.9% on average.
RLEa TIL that a pair of headphones, plugged into a microphone jack, will work as a microphone. A microphone will similarly work as a speaker if plugged into the headphones jack. The internal components of the two devices are functionally identical.
6E5yY TIL that Dogs’ facial expressions are not just random face movements. These facial expressions are actually tools to communicate with their owners. According to the study, the researchers inched toward the conclusion that dogs are smiling at us.
nW9xB TIL in 1997 Packers player Reggie White starred in a movie with Pat Morita called Reggie's Prayer about a retired football player who never won a Super Bowl. Cameos include Brett Favre, Mike Holmgren, The Big Show, and MC Hammer. The Packers won the Super Bowl two days after the movie's release.
e0dBJ TIL A man named Dean Karnazes has a physiological advantage in that he doesn't seem to have a lactate threshold; thus was able to run 350 miles in 3 days without sleep