Air quality has taken a serious hit across the United States as a two-fold blow of wildfires in the West and in Canada have ...

A small medical transport plane crashed and caught fire Tuesday on the Navajo Nation in northern Arizona, killing all four ...

A small medical transport plane crashed in eastern Arizona and left several people dead. Navajo police said four people were ...

This image released by the Navajo Nation Police Department shows a medical transport plane after it crashed near the airport ...

A small medical transport plane crashed and caught fire on the Navajo Nation in northern Arizona, killing four people.

Yet in defiance of the free market that has boosted renewables, the Trump administration is acting to undo those positive changes and make the air dirty again by throwing multiple lifelines to the ...