As tribes struggle to protect their heritage, the nation’s leading state archaeologist says she lacks the authority to to stop development projects.

Montana’s rollback of its water-quality standards comes at a time of heightened attacks on the Clean Water Act nationwide.

The latest map of Colorado wolf movement, released in November, doesn’t show as much southern activity as October’s. But ...

Karen Budd-Falen, a top official at the Department of Interior, has financial ties to the controversial Thacker Pass lithium ...

Nearly every part of the Western U.S. is in drought conditions today. As of December, the National Water and Climate Center’s map of snow-water equivalent is colored red, and most places are less than ...