The Science of Men

Learn about the history of dudes, and a new theory about deep voices in this new episode of SciShow News. You know, science... bro... stuff. Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, Coda Buchanan, Lucy McGlasson, Accalia Elementia, Mark Terrio-Cameron, Saul, Kathy & Tim Philip, Kevin Bealer, Christopher Collins, Thomas J., charles george, Andreas Heydeck, Patrick D. Ashmore, Justin Lentz, Will and Sonja Marple, Ed Shelley, Chris Peters, Tim Curwick, Philippe von Bergen, 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 ---------- 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: Y-Chromosome http://nature.com/articles/doi:10.1038/ng.3559 http://www.1000genomes.org/about http://isogg.org/wiki/Haplogroup http://www.sfu.ca/ipinch/sites/default/files/resources/fact_sheets/ipinch_adnafactsheet_final_revisedoct2015.pdf Sexual Dimorphism http://rspb.royalsocietypublishing.org/lookup/doi/10.1098/rspb.2015.2830 http://www.britannica.com/science/sexual-dimorphism http://www.webmd.com/a-to-z-guides/cortisol-14668 http://news.utexas.edu/2010/09/27/stress-hormone-blocks-testosterones-effects-study-shows