"The former president assailed Vice President Kamala Harris for her views on fracking and power plant emissions as he vowed to cut energy costs in half in his first year in office."

"A chemical reaction involving emissions from cars and buildings can negate their environmental benefits. New research shows what big cities can do about it."

"The Democratic caucus is divided over whether to support legislation that seeks to speed up the nation’s energy build-out — largely based on disagreements about what its actual climate impacts would be."

Alexandria, Va., is almost finished digging a 2.2-mile tunnel to fix its combined sewer overflow problem..

"Nearby residents have been sounding the alarm about Coffin Butte Landfill for years. Now Sen. Jeff Merkley and other members of Congress are demanding action."

"New analyses reveal that 4.4 billion people across low- and middle-income countries — over half of the world’s population — don’t have safe household drinking water."

"California Gov. Gavin Newsom (D) on Monday vetoed a bill aimed at tightening air pollution monitoring provisions for so-called fence-line zones that mark the perimeter of oil refineries."

"Watchdogs are raising new concerns about legacy contamination in Los Alamos, the birthplace of the atomic bomb and home to a renewed effort to manufacture key components for nuclear weapons."

"Cattle at a Queensland feedlot were fed red seaweed for 200 days in one of the longest trials of the additive – but experts say it’s not farm-ready"