California Amps Up Proposal to Slash Planet-Warming Emissions

California’s top air regulator on Wednesday accelerated the state’s blueprint to cut greenhouse gas emissions in what the body’s chair called “far and away the most important” update.

The plan shoots for a 48% reduction of greenhouse gases by 2030—up from the previous 40% mandate—compared to 1990 levels. It also commits to no new gas plant builds in the state, and an equitable multi-agency process that transitions away from oil extraction and refining.

“California is drastically cutting our dependence on fossil fuels and cleaning our air—this plan is a comprehensive roadmap to achieve a pollution-free future,” Gov. Gavin Newsom (D) ...