Two lightning-ignited fires roared through forests of pinon pine, Utah juniper and Gambel oak in Mesa Verde National Park, scorching 21,061 acres in the park and another 7,786 acres nearby.
Most of these steelhead salmon are of hatchery origin, not the wild runs that swam upriver before Bonneville Dam was built in 1938.
At least 1.6 million wild chinook salmon fry died last spring after being stranded in gravel by low-water conditions along a 17-mile stretch of the Columbia River.
The Aug. 24 decision upholds that cattle grazing harms the desert tortoise and its critical habitat.
Cultural changes during this period, including the earliest evidence for cultivation of corn and cotton, occur concurrently with changes in available moisture.