Jillian and Haley delve into the unbelievable story of Jill Heinerth, a cave diver who became one of the first (and only) people do dive an ice cave in the interior of an iceberg.  Then Haley talks about emperor penguins and Jillian talks about her trip to Big Bend National Park and her potentially-extraterrestrial experience in Marfa.

Sources:

‘The Cave Tried to Keep Us’: The First-Ever Dive Inside An Iceberg, Jill Heinerth and Matthew Stock, WBUR (Boston’s NPR station)

Cave Diver Risks All to Explore Places ‘Where Nobody Has Ever Been’, Dave Davies, NPR

Iceberg, Iceberg B-15, Wikipedia 

Antarctica Ice Island Expedition Documentary, National Geographic