"This is not America's war," Iran's deputy foreign minister tells Lyse Doucet, as Donald Trump considers US action in the conflict.

Iran and Israel continue strikes on Wednesday night, after Donald Trump says the US "may" join the Israeli attacks.

Iowans in communities around the state, primarily in central and southern regions, have been told to refrain from watering their lawns, washing their cars and filling swimming pools.

The U.S. Supreme Court says an Oklahoma challenge to an Environmental Protection Agency air pollution rule should be heard in a regional circuit court ...

The agency said the new program would focus on “statutorily required functions” with teams that “have different goals, ...

Wednesday, the U.S. Supreme Court set rules for determining when cases challenging the actions of the U.S. Environmental ...

The U.S. Supreme Court established rules of the road on Wednesday to determine when lawsuits challenging actions by the U.S.

Officials have told residents in three states to stay indoors this week due to severe air quality alerts and record-breaking ...

Wildfire smoke has been visiting the Midwest more frequently, making it more important to know how to find your area’s air quality index.

Health officials advise minimizing UV exposure by staying out of the sun from 10 a.m. to 4 p.m., regularly reapplying sunscreen, wearing protective clothing and seeking shade. Extreme heat warnings ...

The agency plans to expedite the process of cleaning up toxic waste sites, even as Trump aims to slash its budget and staff.

It’s not just Cahokia Heights. Five dozen communities in Southern Illinois account for a third of the reported sanitary sewer ...