From the Vault: Horseshoe Crabs

Their fossils date back 450 million years and their copper-rich blue blood continues to benefit various medical applications. In this episode of Stuff to Blow Your Mind, Robert and Joe explore the science and history of horseshoe crabs. (Originally published 1/16/2020) Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.