Conservation groups say the proposed Arizona routes for an Interstate 11 project failed to consider habitat for imperiled desert species.

The Petrified Forest and Painted Desert are uniquely Arizona road trip destinations. Here's why it's worth the drive and what ...

Foes of a plan to construct a new interstate highway — including a segment that could go through environmentally sensitive ...

Foes of a plan to construct a new interstate highway — including a segment that could go through environmentally sensitive ...