Ruben Gallego could take the reins as one of the Senate’s leading nuclear energy champions. The Arizona Democrat, fresh off a ...

Arizona's senators voted with Republicans to confirm Lee Zeldin as the new head of the Environmental Protection Agency.

Former North Dakota Republican Gov. Doug Burgum is now officially Interior Secretary, with help from Arizona’s U.S. senators and a couple of its tribes.

This week, with wars still raging in Ukraine and the Middle East, escalating climate chaos and increasing biological and AI threats, the nuclear Doomsday Clock has been pushed to just ...