How a Cow Saved Millions of Lives

Sources & further reading: This video was made possible through a grant by Open Philanthropy. Check out ’500 Million, But Not A Single One More’ by Rational Animations here: Continue learning about the fascinating world of biology with our Human Cell Poster, exclusively available here: Few of the monsters that evolution created have been so successful at hurting us as the variola virus, responsible for smallpox. The carnage it caused was so terrible and merciless that it compelled humankind, for the first time, to act truly globally. It was one of the greatest wins of our species over the ancient powers of nature, all made possible by… cows. OUR CHANNELS ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ German: Spanish: French: Portuguese: Arabic: Hindi: Japanese: Korean: HOW CAN YOU SUPPORT US? ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ This is how we make our living and it would be a pleasure if you support us! Get Products designed with ❤ Join the Patreon Bird Army 🐧 DISCUSSIONS & SOCIAL MEDIA ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ TikTok: Reddit: Instagram: Twitter: Facebook: Discord: Newsletter: OUR VOICE ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ The Kurzgesagt voice is from Steve Taylor: OUR MUSIC ♬♪ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ 700 minutes of Kurzgesagt Soundtracks by Epic Mountain: Spotify: Soundcloud: Bandcamp: Youtube: Facebook: The Soundtrack of this video: Soundcloud: Bandcamp: If you want to help us caption this video, please send subtitles to subtitle@ You can find info on what subtitle files work on YouTube here: Thank you! 🐦🐧🐤 PATREON BIRD ARMY 🐤🐧🐦 ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Many Thanks to our wonderful Patreons (from ) who support us every month and made this video possible: Mason & Sophia Green, KEZACO, Mitchell Grenier, Merlin, Sage, Morry Kolman, Riomura_Dev, Nidhoegger, Julian Nowak, Rayyrawr, Arthur Robillard, Christian, Raphael Seffers, Sim Slim, David Manzanarez, cicero4, Domenic Rigling, AlZe, Jonas Brodesser, Peter Roth, Tobias, Nuno Serén, Adam W, David Bank, Charles Brown, Winston White, Dustin Davis, Hassan Taher, Eduardo Omerović C., Juan Arturo Drew P., Glacier, marin, Jae Darl, Scott & Sora, Andoriol, Piero Acevedo, Isimo, West Stringfellow, Driaon, Simon Goller, Tom Bonarewitz, Amelie Büttner, Ma. Jimena, Kury Sama, Marco Grotemeyer, Bao Truong, Chrispy, Nigggo, Sivarama Pokala, jonas meinberg, Cheese, David Walsh, Jan, Philipp Laube, Sinje Brandt, Lit, Paul, Junipal Witt, Rhodii Rodiles, Jamarr Mays, Andre Vianna, Flemming H., Nick Elvis, Snake4you, Midokin, Mario Tutzer, MetroTM, CheezeNuggies, Mäddin, Nils Scholz, Samsa, Kaine Shadory, TNT TV Gaming, Kevin Kaufmann, Florian Arndt