Prescott's streets will thrum with anticipation in the haze of dawn. Flags snap in the desert breeze, and hoofbeats drum out ...

As global temperatures rise, these overlapping events are turning local air pollution into transcontinental threats.

Dust rising from the dry bottom of Owens Lake is a longstanding problem. Now, scientists have found that lands surrounding ...

A recent satellite photo captured a giant comma-shaped cloud of "Saharan dust" being blown above the Atlantic Ocean. The hazy ...