Hiroko Tabuchi

The Pentagon has again postponed PFAS cleanups at hundreds of military sites, in some cases up to 19 years, prompting bipartisan anger in Congress.

The tech giant is investing in the natural-gas-burning power plant as part of a huge data center in Texas, even as it pledges to honor climate commitments.

Trump’s Vision for A.I. Dominance Comes With Major Air Pollution

Hundreds of bases are contaminated with PFAS, which are linked to low birth weight and other risks. Politicians from both parties are demanding explanations.

The companies knew they were releasing more of the greenhouse gas than they publicly reported, according to industry files cited by the Center for Climate Integrity, an activist organization.

A start-up company has permission to try its plan to bounce solar rays onto the dark side of Earth, turning night to day for a three-mile-wide patch.

The official urged requiring a fish farm to monitor for the tiny plastic particles. The E.P.A. said he had taken steps to embarrass the agency.

In the past weeks, two sites in the United States have halted operations.

Throughout history, people have come up with surprising ways to beat the heat that actually work.

The settlement addresses the dumping of PFAS “forever chemicals,” which have been linked to cancer and other risks, by Chemours in several states.