Engage Your Students in the Natural World With Threshold

Here you'll find:

A high-level summary of each episode of the show

Time-stamped outline of each episode to help you find key moments for playing in the classroom

A glossary for each season

Keywords for each episode

Additional reading and related resources for each season

A downloadable transcript of each episode

Short video excerpts for some episodes

Threshold content is most accessible to learners in high school and college. We continue to develop and build this resource. If you want to support our work, consider making a donation. If you're a teacher and are interested in creating classroom lessons and activities based on episodes, get in touch!

Everything we make is free to listen to, use, and share.

 

Threshold Season Resources

Season 1: Oh, Give Me A Home

In our first season, we explore the story of the American bison. The United States named bison the national mammal, but we still haven't decided if we're ready to restore them as wild animals on the American landscape. Could we ever live with wild, free-roaming bison again? Should we try? Why, or why not?

In Season 2, we take a circumpolar journey to find out what the Arctic is, how it’s changing, and why that matters. The Arctic is warming twice as fast as the rest of the planet but satellite images of melting sea ice don't begin to tell the whole story. Four million people live in the Arctic, and they’ve been dealing with the effects of climate change for decades. We wanted to hear from them in this pivotal moment—when the ground is literally shifting beneath their feet.

In Season 3, we dive into the decades-long debate over drilling for oil in the Arctic National Wildlife Refuge. It’s a debate that’s often reduced to a binary, black-and-white, pro-versus anti-oil shouting match. But the more we listened to the people, the more we realized that this isn’t only about oil extraction, conservation, and wildlife. For the people who live there, this battle over drilling is part of a much older struggle for sovereignty and cultural survival.