Tuesday, October 23 at 10 p.m. — Investigate the groups that changed the debate on climate and redefined the politics of global warming.

Tuesday, July 24, 10 p.m. — Probe the battle between those who depend on the Bristol Bay for salmon and those who want to dig an open-pit mine at its headwaters.

Friday, June 22 at 8:30 p.m. — Follows the journey of the Elwha River from the day it was dammed to the day it was set free once again.

Tuesday, April 3 at 8 p.m. — Learn how the tension between technological achievement and environmental impact hangs over the legacy of Grand Coulee Dam.