Arizona Senate President Warren Petersen sent a letter to President Donald Trump's Environmental Protection Agency, urging it ...

California's wildfires underscore the urgent climate crisis. The Trump administration's rollback of climate policies ...

FIRST ON FOX: One of the top Republican lawmakers in the key swing state of Arizona has sent a letter to President Donald Trump’s Environmental Protection Agency (EPA) requesting that the ...

The Western population of the monarch butterfly hit a near-record low with fewer than 10,000 found living in California this ...

The U.S. Fish and Wildlife Service is taking steps to list monarch butterflies as threatened species and designate seven ...

Four cities in Southern California are opposing an EPA processing site for "hazardous" waste from Los Angeles County's ...

The waiver allowed California to enforce its Advanced Clean Car program that requires auto makers to produce more ...

When a massive fire erupted at one of the world's largest lithium-ion battery storage facilities in Monterey County, it ...

California’s Air Resources Board (CARB) on Jan. 13 sent a letter to withdraw its request to the Environmental Protection Agency pursuant to ...

After President Donald Trump posted on social media earlier this week that the United States Military came into California ...

There's controversy over what is being done with hazardous debris following the deadly Palisades fire in southern California. The Environmental Protection Agency has set up a collection site for that ...

Reps. Laura Friedman, D-Burbank, and Judy Chu, D-Pasadena, were joined by Reps. Brad Sherman, D-Sherman Oaks, and George ...