The California Air Resources Board approved groundbreaking rules requiring passenger, freight and switcher locomotives to decarbonize in the next three decades.

Scientists and engineers from two national labs began a four-year project with locomotive maker Wabtec aimed at using hydrogen in diesel-electric train engines.

NRC ruled that the Davis-Besse nuclear plant in northwest Ohio violated cybersecurity rules and ordered owner Energy Harbor to develop new procedures.

New Jersey is tackling carbon and other air pollution at its ports with new rules aimed at promoting the adoption of electric equipment for moving cargo.

Virginia will replace 83 diesel school buses with zero- or low-carbon vehicles, which will reduce the state’s GHG emissions by about 10,000 tons per year.