Environmentalists and farmers are challenging Arizona's approval of an air pollution permit for Copper World Mine, claiming it's lax on toxic dust.

The president's focus on fossil fuels is a big change from the Biden administration's push for renewable energy.

Though the Republicans controlled both houses of Congress during Trump’s first two years, the party had not yet been turned into a full-on personality cult. Senator John McCain, for instance, famously ...

Climate change is making Phoenix increasingly unsafe for outdoor workers like my dad. We need protections from the heat now ...