The documentary Keystone explores the importance of bison to the land, ecosystem & Native tribes

On this edition of Your Call, we’ll discuss Keystone, a documentary about the land, humans, flora, and fauna, with a focus on bison. The near extinction of bison has altered North America’s delicate …On this edition of Your Call, we’ll discuss Keystone, a documentary about the land, humans, flora, and fauna, with a focus on bison. The near extinction of bison has altered North America’s delicate …