All across the Arctic, frozen soil is thawing out. A lot of stuff is buried there -- plants and animals that lived more than 10,000 years ago. What happens when a Paleolithic bison bone starts to decompose for the first time? And what does that have to do with climate change?
Each season, Threshold explores one story from the natural world, and what it says about us. Season two is all about the Arctic: what it is, what’s changing there, and why that matters for everybody.
For more content and photos from the episode, visit http://www.thresholdpodcast.org