Colorado

wolf

Colorado Has Wolves Again for the First Time in 80 Years. Why Are They Dying?

A controversial reintroduction program is off to a messy start.

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The Pinyon Paradox

Steering pinyon jays from decline requires better knowing and tending one of the American West’s most unappreciated woodlands.

The American moose is the second largest land animal in North America. This bull was photographed near Steamboat Springs, Colorado. Photograph by David Dietrich
Of Moose and Men

In an environment increasingly altered by the expanding footprint of human infrastructure, do moose have a place in Colorado's ecological future?

A cutthroat trout feeds at the surface of a clear lake in Colorado’s Rocky Mountain National Park. Photograph by William Hughes
Resurrecting the Greenback, Take Two

After a case of mistaken identity, scientists face an upstream swim to save a fabled fish.