A wildfire that tore through a historic Grand Canyon Lodge​ had been allowed to burn for days before erupting over the weekend, raising questions about federal officials' decision not to aggressively attack it right away.

A combination of high winds, dry air and above average temperatures caused a wildfire in the Grand Canyon to rapidly expand and cause major damage.

A new report has calculated that making national parks the responsibility of states would raise costs, cut revenue and reduce access for Arizonans.

U.S. land managers have long known that they have a problem on their hands with overgrown forests and persistent drought.

A new study suggests a meteor strike that created Arizona’s Meteor Crater 56,000 years ago may have triggered a massive landslide in the Grand Canyon, blocking the Colorado River and forming a 50-mile-long ancient lake.