Threshold is a public radio show and podcast that tackles one pressing environmental issue each season. We report the story where it's happening through a range of voices and perspectives. Our goal is to be a home for nuanced journalism about human relationships with the natural world.


Season Two



We're hard at work producing season two of Threshold, which will take you on an epic journey around the Arctic. Below you can hear a preview of one of the stories we're following, which was broadcast on PRI's The World in November, 2017.

In our first season, we explored the complicated past and possible future of the American bison. Could the United States ever live with wild, free-roaming bison again? Should we try?  Listen to the first episode below or the entire season here.



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