Smoke from wildfires burning in three Canadian provinces is spreading into the U.S. Upper Midwest, stirring memories of the ...

Smoke from Canadian wildfires carried another day of poor air quality south of the border to the Midwest, where conditions in ...

A New Mexico appeals court has rejected a lawsuit alleging that the nation’s No. 2 oil state failed to meet constitutional ...

BACKGROUND: Previous research suggests that exposures to air pollution and nonoptimal temperatures are associated with a ...