The rule, first established in 2001 by the then-outgoing Clinton administration, allows the federal agency to designate “inventoried roadless areas” within the National Forest System.

Twelve years after the Aspen Fire roared over the Catalina Mountains, once-blackened slopes are showing expanses of bright green new growth — a heartening sign that the forest is on the road to ...

Aspen trees aren't just a pretty sight in the fall, they could also be a valuable tool for crews as they fight wildfires in the state.

The team was also able to use Pando’s genetic data to estimate its age using a theoretical model that plots evolutionary lineage, revealing an estimate of 16,000 to 80,000 years. It places Pando among ...