Karsten Heuer

The breathtaking true story of the return of wild bison to the Rockies, as told by the wildlife biologist who helped lead them there. Featuring behind-the-scenes photographs from one of North America’s most ambitious conservation projects. For thousands of years, wild bison numbering in the millions roamed across a range spanning half of North America. Then, in the 1800s, they were nearly exterminated by European settlers. Buffalo Lessons shares the story of their triumphant return to a mountainous corner of their historic range, nearly a century and a half after they last walked the land. Karsten Heuer, the conservationist tasked with leading the project, chronicles the groundbreaking reintroduction of plains bison to Banff National Park, beginning in 2017, when ten pregnant females and six males were airlifted into an enclosed pasture. It was a complex and ambitious project, designed to restore North America’s largest land mammal to its important ecological role in the landscape and its cultural role for Indigenous peoples. Despite meticulous planning, Heuer and his team found themselves repeatedly “buffaloed” by the animals, who had a knack for doing the unexpected, and teaching the humans lessons along the way. Heuer packs his narrative with thrilling moments: a horseback chase to tranquilize a bison, a helicopter-assisted translocation into the rugged backcountry, and the tense tracking of wayward bulls that scale steep, treacherous terrain. Throughout, his encounters with these massive creatures—both awe-inspiring and humbling—force him to confront his assumptions about control, nature, and conservation. In 2024, Heuer was diagnosed with a terminal brain condition, and he completed the manuscript for Buffalo Lessons in the weeks and days before his death. His narrative ends seven years after the initial introduction, with a thriving population of around one hundred bison and the organization of the first Indigenous hunt in the region in over 150 years. Buffalo Lessons stands as a testament to the resilience of bison, and as the culmination of a life’s work in conservation. Published in Partnership with the David Suzuki Institute

For eons, female members of the Porcupine caribou herd have made the journey from their winter feeding grounds to their summer calving grounds—which happen to lie on vast reserves of oil. They once roamed borderless wilderness; now they trek from Canada, where they’re protected, to the United States, where they are not. In April 2003, wildlife biologist Karsten Heuer and filmmaker Leanne Allison set out with the Porcupine caribou herd. Walking along with the animals over four mountain ranges, through hundreds of passes, and across dozens of rivers—a thousand-mile journey altogether, from the Yukon Territory to the Arctic National Wildlife Refuge and then back again—they reached a new understanding of what is at stake in the debate over drilling for oil. More than a tale of grand adventure or an activist tract, however, Being Caribou is a “gripping, cinematic tale” (Los Angeles Times) with the “bite of a political tract” (Washington Post) about the power of wilderness and how it returns us to the roots of human instinct. On the caribou’s trail Heuer and Allison learn what is possible when two people immerse themselves in the uniquely wild experience of migration, discovering in the process a different way of being.

Walking the Big Wild is the story of Karsten Heuer's extraordinary 18-month journey of hiking, skiing, and paddling across 2100 miles of mountains, forests, and rivers from Yellowstone National Park in Wyoming to the Canadian Yukon. Accompanied by occasional human companions and a remarkable border collie named Webster, Heuer encountered immense challenges: storms, avalanches, floods, and grizzlies. At the end of the journey, Heuer proved that there is nearly continuous wilderness that can support wildlife along the length of the Rockies--and is salvagable if the right decisions are made now.