With a greater understanding of biological mechanisms, humans may be able to take a devastating birth defect and turn it into a treatment for cancer. We're conducting a survey of our viewers! If you have time, please give us feedback: www.surveymonkey.com/r/SciShowSurvey2017 Hosted by: Stefan Chin ---------- Support SciShow by becoming a patron on Patreon: www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters: Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Inerri, D.A. Noe, Charles Southerland, Fatima Iqbal, سلطان الخليفي, Nicholas Smith, Tim Curwick, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Chris Peters, Patrick D. Ashmore, Piya Shedden, Charles George ---------- Looking for SciShow elsewhere on the internet? Facebook: www.facebook.com/scishow Twitter: www.twitter.com/scishow Tumblr: scishow.tumblr.com Instagram: instagram.com/thescishow ---------- Sources: www.snopes.com/2017/05/19/cyclops-goat-born-in-india/ news.nationalgeographic.com/2017/05/rare-cyclops-goat-born-india-video/ www.forbes.com/global/2005/1128/066A.html ojrd.biomedcentral.com/articles/10.1186/1750-1172-2-8 discovery.lifemapsc.com/library/review-of-medical-embryology/chapter-137-general-development-of-the-central-nervous-system www.carterdatabase.org/hpe/research/neuroimaging.html ghr.nlm.nih.gov/gene/SHH ghr.nlm.nih.gov/condition/nonsyndromic-holoprosencephaly#genes www.carterdatabase.org/hpe/articles/images/HPE_Mythologic_and_Teratologic.pdf www.sciencedirect.com/science/article/pii/S0012160600997756 www.ncbi.nlm.nih.gov/pmc/articles/PMC4484722/ altaica.ru/SECRET/cleaves_shI.pdf www.scribd.com/doc/23476603/THE-MYTHS-OF-THE-GODS-Structures-in-Irish-Mythology www.slate.com/articles/news_and_politics/history/2015/09/new_haven_colony_bestiality_trial_the_twisted_puritan_origins_of_our_modern.html oxfordindex.oup.com/view/10.1093/oi/authority.20110803100225575 www.sciencedirect.com/science/article/pii/B9781437701340100605 pubs.acs.org/doi/abs/10.1021/jf5005622 www.sciencedirect.com/science/article/pii/B9780080450469010597