U researchers found that 1,000 years ago, the Fremont used cultural burning to reduce the risk for large-scale wildfire activity in mountain environments.
Read MoreResearch shows how organic crystals in aerosols can help turn water to ice.
Read MoreTo understand the environmental pressures that shaped human evolution, scientists must first piece together the details of the ancient plant and animal communities that our fossil ancestors lived in over the past 7 million years.
Read MoreStudy finds a link between drought and air quality in the western wilderness.
Read More