During a red-flag warning, residents are urged to avoid risky behavior like campfires or other open flames, smoking or ...

The smoke floating over the border shared between America and Canada is now impacting air quality in states as far south as Texas, AirNow's data shows. The EPA has declared the air quality in states ...

But Western states have lost 50% of their wetlands since colonization, and roughly half of the region’s remaining ones are degraded. Illustrations by Hannah Agosta/High Country News ...