EDITOR’S NOTE: This story is a collaboration between The Associated Press and Grist.

Thousands of events are scheduled across the globe to celebrate Earth Day on Tuesday, April 22. Here's a handful happening in ...

Aptly named for its scenic allure, this Wyoming hike is a photographer's paradise, offering stunning panoramas punctuated by ...

The state’s largest American antelope herd travels the famed Path of the Pronghorn each year to winter at lower elevations ...

Over the last month, two of Colorado’s latest gray wolf transplants were killed after crossing the border into Wyoming.