Today’s Solutions: December 15, 2025

Southern California’s biggest transit agency retired its last diesel bus six years ago, capping a 15-year process to replace tailpipes that belched black smoke with quieter, cleaner engines powered by natural gas. Now, Los Angeles County transportation leaders are working toward a bolder goal: buses that don’t pollute at all. The Metropolitan Transportation Authority has begun to plan how to eliminate emissions from its fleet by 2030, a move that will require buying more than

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