Transistor’s mothership PRX has partnered with Outside magazine to produce four special podcast episodes on the Science of Survival. You’ll receive them in Transistor’s podcast feed, and for even more, subscribe to the Outside Podcast.

Here’s episode 3.

In the heart of the Sonoran Desert is the remarkable story of Pablo Valencia, a gold prospector who spent six days wandering in 110-degree heat before stumbling into scientist William McGee’s camp.