Cold to Hot

The icy-white crust of Arctic permafrost is melting, and increased plant growth is turning the glacial north green. Metals like iron, once locked inside the ice, are leaching into hundreds of Arctic rivers, giving them an orange hue. Vivid changes may catch our eye, yet invisible shifts are also afoot. Microbes locked in the frozen ground since the age of the mammoths can now be revived when they thaw. We’re exploring the consequences of changes in permafrost, how AI may help us better understand Greenland ice loss, and get reactions from scientists about the Trump administration’s attempt to dismantle the National Center for Atmospheric Research (NCAR), one of the premier climate and weather researcher centers in the world. Guests: Tristan Caro – Postdoctoral Fellow, Geological and Planetary Sciences Division, California Institute of Technology Twila Moon – Glaciologist and deputy lead scientist at the National Snow and Ice Data Center, within the cooperative Institute for Research and Environmental Sciences at the University of Colorado Boulder. Abagael Pruitt – Biochemist and ecosystem ecologist, postdoctoral researcher at the University of California Davis Karina Zikan – Glaciologist and snow hydrologist, PhD candidate at Boise State University Roland Pease – Science writer and broadcaster often heard on the BBC World Service, and former presenter and host of its program Science in Action Alan Sealls – Retired broadcast meteorologist, adjust professor at the University of South Alabama and president of the American Meteorological Society Featuring music by Dewey Dellay and Jun Miyake Big Picture Science is part of the Airwave Media podcast network. Please contact advertising@airwavemedia.com to inquire about advertising on Big Picture Science. You can get early access to ad-free versions of every episode by joining us on Patreon. Thanks for your support! Learn more about your ad choices. Visit megaphone.fm/adchoices

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Cold to Hot is an episode from Big Picture Science by Big Picture Science.

This episode is 59:54 long.

This episode was published on Jan 26, 2026.

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