{"podcast":{"title":"TED-Ed","slug":"ted-ed-7859430","podcast_index_feed_id":7859430,"rss_url":"https://feeds.megaphone.fm/ted-ed","website_url":null,"image_url":"https://megaphone.imgix.net/podcasts/b7403760-4a33-11f1-9f4d-0b7f17190ea0/image/74cc63dc47cf18e2bcec0e2d83f0aaf9.jpg?ixlib=rails-4.3.1&max-w=3000&max-h=3000&fit=crop&auto=format,compress","author":"TED-Ed","episode_count":1210,"summary":"TED-Ed’s mission is to create lessons worth sharing. Feed and expand your curiosity with our award-winning animated shorts - published on YouTube and available with supplemental learning materials on ed.ted.com. Want to suggest an idea for a TED-Ed animation, nominate an educator or animator? Visit our website at: http://ed.ted.com/get_involved. Consider backing us on Patreon. By doing so, you directly support our nonprofit mission to create free, high-quality educational content: https://www.patreon.com/teded For more information on using TED-Ed content for commercial purposes (e.g. employee learning, in a film, or in an online course), please submit a Media Request using this link: https://media-requests.ted.com/","last_synced_at":"2026-07-25T10:18:01.246496+00:00","page_url":"https://stenobird.com/podcast/ted-ed-7859430"},"episode":{"title":"How do oysters generate pearls? - Rob Ulrich","slug":"how-do-oysters-generate-pearls-rob-ulrich","published_at":"2026-06-21T09:30:00+00:00","page_url":"https://stenobird.com/podcast/ted-ed-7859430/how-do-oysters-generate-pearls-rob-ulrich","show_page_url":"https://stenobird.com/podcast/ted-ed-7859430","url":"https://traffic.megaphone.fm/VG4422667405.mp3","audio_url":"https://traffic.megaphone.fm/VG4422667405.mp3","summary":"Explore how oysters use calcium carbonate to create pearls, and how this chemical compound creates a vast array of other materials.--Despite their iridescent colors and smooth shapes, pearls are actually made of the exact same material as the craggy shell that surrounds them. Pearls, urchin spines, the shells of mussels, snails and clams, even coral— all these structures are made out of the same chemical compound: calcium carbonate. So how does this single ingredient form such a vast array of materials? Rob Ulrich investigates.Lesson by Rob Ulrich, directed by Ivana Bošnjak.Support Our Non-Profit Mission----------------------------------------------Support us on Patreon: http://bit.ly/TEDEdPatreonCheck out our merch: http://bit.ly/TEDEDShop----------------------------------------------Connect With Us----------------------------------------------Sign up for our newsletter: http://bit.ly/TEDEdNewsletterFollow us on Facebook: http://bit.ly/TEDEdFacebookFind us on Twitter: http://bit.ly/TEDEdTwitterPeep us on Instagram: http://bit.ly/TEDEdInstagram----------------------------------------------Keep Learning----------------------------------------------View full lesson: https://ed.ted.com/lessons/how-do-oysters-make-pearls-rob-ulrichDig deeper with additional resources: https://ed.ted.com/lessons/how-do-oysters-make-pearls-rob-ulrich#digdeeperMusic: https://www.campstudio.co----------------------------------------------Thank you so much to our patrons for your support! Without you this video would not be possible! Khalifa Alhulail, Martin Stephen, Jose Henrique Leopoldo e Silva, Mandeep Singh, Abhijit Kiran Valluri, Morgan Williams, Devin Harris, Pavel Zalevskiy, Karen Goepen-Wee, Filip Dabrowski, Barbara Smalley, Megan Douglas, Tim Leistikow, Ka-Hei Law, Hiroshi Uchiyama, M…","meta_description":"Explore how oysters use calcium carbonate to create pearls, and how this chemical compound creates a vast array of other materials.--Despite their iridesc…","key_points":[],"chapters":[],"topics":[],"duration_seconds":427,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/ted-ed-7859430/episodes/how-do-oysters-generate-pearls-rob-ulrich/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/ted-ed-7859430/how-do-oysters-generate-pearls-rob-ulrich.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}