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San Diego has an ambitious plan to store renewable energy, using extra solar power to pump water up a mountain. This old-style "water battery" technology could be set for a revival.

While the U.S. considers finally banning the carcinogen, a group of men has come forward, saying they were exposed repeatedly while working at a chemical plant in New York.

California's gas prices, well above the national average, have gone into overdrive, topping $6 a gallon in October. Why is gas so expensive in a state that's synonymous with the automobile?

Iran faces sanctions over drones being used against Ukraine. There's turmoil and distrust over Britain's two-month-old government. Despite safe alternatives, chemical companies still use asbestos.

There is an oil rush in North Dakota right now. The state is pumping out 10 times the crude oil it did a decade ago. Fortunes are being made, and once-sleepy towns are now bursting at the seams.

With wildfires still a threat, schools in the Pacific Northwest have recently seen big disruptions. Students and teachers are learning how to live with these ongoing hazards.

The grant of nearly $640,000 aims to aid State Department of Environmental Conservation forest rangers by acquiring volunteer firefighters in rural areas.

SARS-CoV-2 is evolving "rapidly," spawning one new variant after another. But omicron continues to dominate, raising new questions about how evolution of the virus is headed.

The city first began the process of overhauling of its land use plan more than four years ago.

In the 70s, Jimmy Carter's priorities included energy efficiency and a shift from foreign oil reliance. His actions were criticized then, but laid the groundwork for addressing climate change.