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

The National Park Service is pushing back against members of Congress who accused the agency of allowing the Dragon Bravo Fire to spin out of control on the Grand Canyon’s North Rim.

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.