Montana is home to huge swaths of public land, clear rivers, and stunning mountain ranges. It also produces more fossil-fuel-related carbon emissions annually than all but five other states—and is responsible for as much carbon dioxide as many countries, including Argentina, the Netherlands, and Pakistan.
Montanan Kian Tanner, 18, grew up next to Flathead Lake, in the state’s northwest corner, fly-fishing, hiking in nearby Glacier National Park, and spending most of his time outside. During his adolescence, he saw his home increasingly threatened by wildfires and smoke-choked air. Another local teen, Taleah Hernandez, 19, witnessed this, too. “I’ve had a few wildfires pretty close to my home,” Hernandez says. “A few years ago, one shut down the highway, so we had to check in with a police officer any time…
