In Utah, scientists are exploring the site of a long-vanished inland sea called Lake Bonneville to understand the West's past - and future - climate.
The dedicated volunteers of the Hummingbird Monitoring Network serve as citizen scientists, gathering field data on the birds they love.
The marijuana growers of California's notorious "Emerald Triangle" wrestle with bringing their shadow economy into the light of day.
A Wyoming farmer battles industry and bureaucracy trying to find out whether hydraulic fracturing - used in natural gas drilling - polluted his drinking water.
An air-tour businessman and Italian developers become deeply enmeshed in the politics of tiny Tusayan, Ariz., part of a plan to profit from the nearby Grand Canyon.
A strategic miscalculation by environmental groups helped spur the delisting of gray wolves in Montana and Idaho.
On Fort Berthold: Three tribes, a dam, and a diabetes epidemic. | On the Klamath: A settlment to restore rivers and tribes.
Republicans, Tea Partiers and environmentalists unite against power transmission lines planned for Montana.
Alaska's politicians and scientists wrestle over how to manage big game and the predators that prey on it.
Not everybody is happy, but the Obama administration is making slow but steady progress in dealing with the West's environmental issues.
Kane County, Utah, heart of the Sagebrush Rebellion and an off-road vehicle paradise, is also home to a growing number of environmentalists, hikers and animal lovers.
Will there ever be enough water in California's Bay Delta to satisfy farmers, keep fish alive and quench the thirst of millions of people?