Ask Arthur Middleton to define the lifeblood of the Greater Yellowstone Ecosystem, and he may mention three major river systems. But he will quickly turn his focus to terrestrial wildlife migrations.

Today, the GYE is a 20-million-acre piece of America encompassing two national parks, 10 million acres with seven national forests, three wildlife refuges, seemingly countless acres of BLM and state ...

Indeed, the arrival of the modern environmental age has brought many dramatic changes to the Greater Yellowstone Ecosystem ... tangling near the Firehole River. Photograph by Michael Nichols ...

Pointing to new science suggesting the Greater Yellowstone Ecosystem lacks quality lynx habitat, wildlife managers are proposing expansive reductions in the area designated as “critical habitat ...

While the fictional show celebrated the natural beauty of a Montana ranch at the border of a national landmark, the real Greater Yellowstone Ecosystem is under siege from developers and a surging ...