Scientists bunked with 80 chimps in the wild for 18 months and returned home with a lexicon of chimpanzee sign language covering 66 different gestures! Our Sources: ScienceDirect: http://bit.ly/VToQUS Wired.com: http://wrd.cm/1lNtoB3 Telegraph: http://bit.ly/1mfa83L Buy some awesomeness for yourself! http://www.forhumanpeoples.com/collections/sourcefed More stories at: http://www.sourcefed.com or check out: http://youtube.com/sourcefed for our 5 daily videos or anything else we've ever done. Follow us on Twitter: http://twitter.com/sourcefed Follow us on Tumblr: http://sourcefed.tumblr.com/ Like us on Facebook: http://on.fb.me/xQDV8M Philly D OFFICIAL APP for instant updates: http://bit.ly/aIyY0w Get your SourceFed Posters here: http://bit.ly/P2Zn7h OFFICIAL SourceFed APP: http://bit.ly/1nmTFJp P.O. Box address: Attention: SourceFed 6433 Topanga Canyon Blvd. #805 Canoga Park, CA 91303 The @SourceFed Host: @joebereta @stevezaragoza @thatgrltrish @mattlieberman Music: @ronaldjenkees, @Hagemeister