@tweetsauce LINKS: Destin and "Smarter Every Day": www.youtube.com/destinws2 Good site for info on the oldest sound recordings: www.phonozoic.net/ First recording: en.wikipedia.org/wiki/History_of_sound_recording First voice recording: en.wikipedia.org/wiki/%C3%89douard-L%C3%A9on_Scott_de_Martinville Lincoln's Gettysburg address spoken by eyewitness William R. Rathvon www.youtube.com/watch?v=fU6UacteZus Fingernails on chalkboard: news.sciencemag.org/sciencenow/2011/10/cover-your-ears.html Saturn and other space sounds: www.spacesounds.com/navigator/navigator.html