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PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY↓ More info and sources below ↓Uploaded 28-07-20We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmartSUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub Having bones is pretty cool. They make our blood, let us hear, and keep us from being just a squishy puddle on the floor. But for every species with bones, there are at least 20 species on Earth with exoskeletons instead. And those exoskeleton animals are incredibly tough and strong. So why don’t WE have our skeletons on the outside? This is the story of bones!References: https://sites.google.com/view/why-our-skeletons-on-inside/home Special thanks for research assistance:Riley BlackSpecial thanks to our Brain Trust Patrons:AlecZeroAmory SilvaAmy SowadaBenjamin TeinbyDiego LombeidaDustinEric MeerGeorge GladdingJay StephensMarcus TuepkerMegan K BradshawPeter EhrnstromvincbisJoin us on Patreon! https://patreon.com/itsokaytobesmartTwitter http://www.twitter.com/DrJoeHansonhttp://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merchhttps://store.dftba.com/collections/its-okay-to-be-smartFacebookhttps://www.facebook.com/itsokaytobesmartpbs/ Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices
