A climate problem even California can't fix: tailpipe pollution

For three decades, California has led the fight to control tailpipe pollution, with countless policies promoting cleaner gasoline, carpooling, public transportation and its signature strategy - the electric vehicle. Californians now buy more than half of all EVs sold in the United States, and the state’s auto-pollution policies have provided a model being adopted around the world. Tailpipe pollution here is going up, not down, despite billions of dollars spent by one of the most environmentally progressive governments on earth.