Fresh Air Weekend highlights some of the best interviews and reviews from past weeks, and new program elements specially paced for weekends. Our weekend show emphasizes interviews with writers, ...

Jill Heinerth, the Explorer in Residence at Royal Canadian Geographical Society, wasn’t sure there were caves inside an iceberg because no one had ever been inside one before, but she was willing to ...

Renowned Canadian cave-diver Jill Heinerth, fueled by an insatiable curiosity about Earth's hidden depths, embarks on legendary expeditions - from Mexico's extensive caves to Antarctica's iceberg ...

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 ...