Reptiles Breathing Hack Helped Birds Dominate the Air

When we breathe out, we empty our lungs. But an ancient reptile figured out a more efficient way to breathe, which ultimately helped birds dominate the skies. Go to http://Brilliant.org/SciShow to try their Physics of the Everyday course. The first 200 subscribers get 20% off an annual Premium subscription. Hosted by: Hank Green SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at http://www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Bd_Tmprd, Harrison Mills, Jeffrey Mckishen, James Knight, Christoph Schwanke, Jacob, Matt Curls, Sam Buck, Christopher R Boucher, Eric Jensen, Lehel Kovacs, Adam Brainard, Greg, Ash, Sam Lutfi, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, charles george, Alex Hackman, Chris Peters, Kevin Bealer ---------- 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: https://doi.org/10.1152/physiol.00056.2014 https://doi.org/10.1098/rstb.2019.0140 https://doi.org/10.1007/s00360-016-0983-3 https://doi.org/10.1093/icb/icv078 https://doi.org/10.1038/nature12871 https://doi.org/10.1073/pnas.1405088111 https://doi.org/10.1126/science.1180219 https://doi.org/10.1126/science.1140273 https://doi.org/10.1086/605335 http://people.eku.edu/ritchisong/birdrespiration.html http://www.palaeontologyonline.com/articles/2017/fossil-focus-archosaur-respiratory-system-breat Images: https://commons.wikimedia.org/wiki/File:AmericanAlligator.JPG https://commons.wikimedia.org/wiki/File:AA_Iguana_Fot_Ars_Summum.JPG https://www.storyblocks.com/video/stock/visualization-of-human-respiratory-system-r809oe47xiwd94zf4 https://www.storyblocks.com/video/stock/group-of-young-adult-friends-run-past-camera-in-a-forest-ryrt4ksjisjiqe4y https://www.istockphoto.com/photo/tree-swallow-mouth-open-oregon-wild-bird-close-up-gm1247601699-363336731 https://www.istockphoto.com/vector/hen-gm1199743617-343383175 https://www.istockphoto.com/photo/greylag-geese-flying-gm1152401682-312638479 https://www.istockphoto.com/photo/nile-crocodile-the-largest-freshwater-predator-in-africa-found-in-in-lakes-rivers-gm1165173093-320514062 https://www.istockphoto.com/photo/monitor-lizard-in-natural-habitat-gm1141580307-305894562 https://www.istockphoto.com/vector/sparrow-silhouette-gm1044947016-279664874 https://www.istockphoto.com/vector/alligator-gm457548889-31726844 https://www.istockphoto.com/vector/gecko-silhouettes-gm155312641-3586727 https://www.istockphoto.com/vector/silhouettes-of-reptiles-gm1174932270-326963896 https://www.istockphoto.com/vector/bats-silhouettes-set-gm494787264-77653099 https://www.istockphoto.com/vector/african-animals-icon-set-gm451038591-25210090 https://www.istockphoto.com/photo/xl-migrating-canada-geese-gm136917788-13312220