Watch the vocal chords of singers while they sing video
Geege Schuman stashed this in Anatomy
Stashed in: Science!, Best Videos, A Cappella, Interesting
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It's pretty alien looking, looks like a beak, maybe that's what it evolved from? Amazing that such a rudimentary looking thing can make such a precise and beautiful sound.
Nope, it evolved post-ape less than 100k years ago:
http://www.npr.org/templates/story/story.php?storyId=129083762
They do look like baby birds though. Can't get that image out of my head.
12:02 PM Apr 05 2014