Jill recounts her harrowing expedition to Antarctica in 2000, where her team intercepted the largest iceberg in recorded history after it calved from the Ross Ice Shelf. She describes diving inside the iceberg in water one-tenth of a degree from freezing, losing the entrance when ice calved over their exit, and narrowly escaping when the entire structure explosively collapsed shortly after their final dive.
The discussion also covers Jill's work in the Yucatan, where Mayan sacrificial remains sit preserved in underwater caves, her exploration of ancient Roman irrigation systems beneath the Egyptian desert, and the discovery of species new to science in volcanic lava tubes. Art presses her on climate change, ocean health, and the deterioration of freshwater springs near her Florida home.
