‹ All playlistsV-TEDyoutube embedTED-Ed — Ideas Worth ExploringAnimated lessons on science, history, math and philosophy.How does the immune system work? | TED-EdHow does the immune system work? | TED-Ed5 minWhat is entropy? | TED-EdWhat is entropy? | TED-Ed5 minHow do fish breathe underwater? | TED-EdHow do fish breathe underwater? | TED-Ed4 minHow do tornadoes form? | TED-EdHow do tornadoes form? | TED-Ed5 minThe Science of Symmetry | TED-EdThe Science of Symmetry | TED-Ed5 minWhat would happen if you didn't drink water? | TED-EdWhat would happen if you didn't drink water? | TED-Ed4 minMore playlistsAnimation Classics — Where It All Began →Soviet Animation Masterpieces →