Modern Human Migration and Echolocating Eels

Scientists have found 80,000-year-old modern human teeth in a Chinese cave, challenging the most widely accepted timelines of human migration. And electric eels use electricity to both attack and track their prey! Hosted by: Hank Green ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Justin Lentz, David Campos, Philippe von Bergen, Chris Peters, Lilly Grainger, Happy Birthday!!, and Fatima Iqbal. ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by becoming our patron on Patreon: https://www.patreon.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow Sources: http://www.nature.com/nature/journal/vaop/ncurrent/full/nature15640.html http://www.nature.com/articles/doi:10.1038/ncomms9638 http://anthro.palomar.edu/homo2/mod_homo_4.htm http://www.reuters.com/article/2015/10/15/us-science-teeth-idUSKCN0S82CB20151015 http://www.nps.gov/grba/learn/nature/flowstone.htm http://askanaturalist.com/how-do-electric-eels-generate-electricity/ http://www.ucs.louisiana.edu/~jxa4003/Albert%20PDF's/Albert-Crampton-Electroreception-proofs.pdf http://animals.mom.me/electric-eels-live-3669.h tml