Scientists and explorers have found a whole new world, ripe for discovery, under our feet. The earth's underground is teeming with life, from fungal networks to the deep microbiome miles below the planet's crust. It's an exciting place, and it's changing what we know about the planet and ourselves.

Original Air Date: November 02, 2019

Guests:

Robert Macfarlane — Jill Heinerth — Ben Holtzman — Werner Herzog — Christine Desdemaines-Hugon

Interviews In This Hour:

Why We Descend Into Darkness — A Cave Diver's Treks Through The Veins Of The Earth — How To Listen To An Earthquake — Why Werner Herzog Is Awe-Struck — Finding Our Ancestors in Ancient Cave Art