We often take things like medicine and science for granted. Would you be able to survive on the Earth millions of years ago? Watch More: Check out Casually Explained! ►►►► http://bit.ly/1XqJ9UU Support Life Noggin on Patreon: https://www.patreon.com/LifeNogginStudios?ty=h Follow Us! https://twitter.com/LifeNoggin https://facebook.com/LifeNoggin Click here to see more videos: https://www.youtube.com/user/lifenoggin Life Noggin is a weekly animated educational series. Whether it's science, pop culture, history or art, we explore it all and have a ton of fun doing it. Life Noggin Team: Animation by Steven Lawson Director/Voice: http://lifenogg.in/patgraziosi Executive Producer: http://lifenogg.in/IanDokie Director of Marketing: http://lifenogg.in/JaredOban Writer: http://lifenogg.in/KayleeYuhas Sources: http://www.history.com/this-day-in-history/salk-announces-polio-vaccine http://www.history.com/news/ask-history/who-invented-the-internet http://www.bbc.co.uk/nature/history_of_the_earth/Pleistocene http://www.livescience.com/40311-pleistocene-epoch.html http://historyoftheuniverse.com/index.php?p=origpeop.htm http://blogs.scientificamerican.com/lab-rat/ancient-diseases-of-human-ancestors/ http://phys.org/news/2010-07-humans-malaria-parasites-million-years.html