Episode 252 - The Ice Age
Summary
Episode 252 of The Common Descent Podcast explores the science of ice ages, defining the Pleistocene glacial period and detailing how glaciers form, flow, and reshape landscapes through erosion and deposition. The hosts also review recent paleontological news, including the discovery of faint trans-Neptunian objects via Hubble and Webb telescopes, new insights into why snake embryos coil tightly during development, and the reconstruction of ultrasonic calls from Jurassic crickets. Additionally, they discuss the discovery of the southernmost known dinosaur eggs in Patagonia, suggesting titan…
Topics discussed
Introduction and welcome to Episode 252
Announcements: Patrons, YouTube series, and Spooky 2026
News: Trans-Neptunian objects and early solar system
News: Snake embryonic development and coiling
News: Insect stridulation and ultrasonic calls
News: Southernmost dinosaur eggs in Antarctica
Ice Age basics: Glaciers, ice sheets, and landforms
Earth's history: Icehouse vs Greenhouse conditions
Quaternary Ice Age: Cycles, sea levels, and habitats
Milankovitch cycles and orbital influences on climate
Last Glacial Maximum and the Younger Dryas
Modern climate change and future glacial predictions
Listener Q&A: Fossils in NY and whale umbilical cords
Outro and credits
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