Arizona traffic laws made for some unique rules for local drivers. Here's what you need to know before hitting road in the state.

Newly inaugurated President Donald Trump plans executive action that could deepen climate change's impact on Arizona.

First-week orders could undermine progress on clean energy investments, pollute the air and add few benefits to the economy, ...

By declaring a national emergency on energy, Trump will make it a priority of his administration to increase the domestic production of oil and other forms of fossil-fuel energy, officials said. It ...

As Arizona continues ... mention of solar or wind power. In his first hours in office, Trump froze all new regulations and called for ending tax subsidies on electric vehicle purchases, though ...

An Oregon jury on Wednesday found a truck driver guilty of manslaughter in a collision on Interstate 5 that killed seven ...

Friday’s Federal Election Commission filings cement Musk’s status as the biggest political donor of the recent presidential ...

Musk's close ties with Trump may lead to the easing of federal investigations into Tesla's self-driving technology, raising ...

Democrats Challenge Musk’s Efforts to Dismantle U.S.A.I.D. In front of the headquarters of the government’s largest ...

The early Tuesday morning release of the volume of Smith’s report dealing with Trump’s efforts to thwart the peaceful transfer of power after ... could have been a vehicle to release messages ...