Most people know that they don't need their appendix, but what other organs can humans live without?

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: Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطا الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Bella Nash, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick Merrithew, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz
----------
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://hemifoundation.homestead.com/facts.html
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4729844/
http://www.slate.com/articles/news_and_politics/explainer/2013/03/pope_francis_has_only_one_lung_is_that_a_problem.html
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3472481/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC64801/
https://www.niddk.nih.gov/health-information/digestive-diseases/digestive-system-how-it-works
https://www.nostomachforcancer.org/about/life-without-a-stomach/gastrectomy
https://www.nhs.uk/conditions/gastrectomy/risks/
https://www.merckmanuals.com/home/blood-disorders/spleen-disorders/overview-of-the-spleen
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5605342/
https://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0072577/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2701258/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5602614/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1358332/ 
https://www.niddk.nih.gov/health-information/digestive-diseases/gallstones/definition-facts
http://www.americanjournalofsurgery.com/article/0002-9610(76)90295-6/abstract 
https://www.kidney.org/kidneydisease/howkidneyswrk#howis
https://www.niddk.nih.gov/health-information/kidney-disease/kidney-failure/kidney-transplant
https://www.sciencedaily.com/releases/2015/05/150527124736.htm

Images:

http://www.thinkstockphotos.com/image/stock-photo-x-ray-of-brain-in-skull/dv385010
http://www.thinkstockphotos.com/image/stock-photo-3d-illustration-of-lungs-medical-concept/639399418
https://en.wikipedia.org/wiki/File:PneumonectomyXray.PNG
http://www.thinkstockphotos.com/image/stock-photo-3d-illustration-of-stomach/519081448
http://www.thinkstockphotos.com/image/stock-photo-human-spleen-anatomy/872739182
http://www.thinkstockphotos.com/image/stock-photo-3d-illustration-of-liver/524388994
https://en.wikipedia.org/wiki/File:Laparoscopic_Cholecystectomy_Incisions,_1_Week_Old.jpg
http://www.thinkstockphotos.com/image/stock-photo-3d-illustration-of-urinary-system/524387736