Original broadcast date: March 11, 2022. From our planet's underwater caves to its ancient soils, there are entire worlds right beneath our feet. This hour, we explore the subterranean forces that shape our lives above the ground. Guests include cave diver Jill Heinerth, death care advocate Katrina Spade, soil scientist Asmeret Asefaw Berhe, and paleontologist Nizar Ibrahim. TED Radio Hour+ subscribers now get access to bonus episodes, with more ideas from TED speakers and a behind the scenes look with our producers. A Plus subscription also lets you listen to regular episodes (like this one!) without sponsors. Sign-up at plus.npr.org/ted.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

Jill Heinerth, a renowned cave diver, shares thrilling tales of exploring underwater caves and the dangers they pose. Katrina Spade discusses eco-friendly death care, promoting human composting as a sustainable alternative to traditional methods. Soil scientist Asmeret Asefaw Berhe highlights the vital role of soil in climate change mitigation and encourages climate-smart practices. Lastly, Nizar Ibrahim reveals fascinating insights about Spinosaurus, uncovering its identity as a river-dwelling predator, challenging previous concepts in paleontology.

From our planet's underwater caves to its ancient soils, there are entire worlds right beneath our feet. This hour, we explore the subterranean forces that shape our lives above the ground. Guests include cave diver Jill Heinerth, death care advocate Katrina Spade, soil scientist Asmeret Asefaw Berhe, and paleontologist Nizar Ibrahim.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy