More than 300 career employees at the Environmental Protection Agency have left. Those who remain face a painful decision: ...

Colombian president Gustavo Petro has ordered the state-run oil company Ecopetrol to cancel a joint venture with U.S.

In arid West Texas, water seeps and bubbles from old wells, sometimes carrying oil, brackish water or other pollutants to the surface.

Nearly five years ago, the United States Department of Energy, or DOE, began an unusual partnership with the country’s largest lobbying group for the plastics industry.