https://apnews.com/c63527af6d55fe9b8857e50f2b99d079 > SACRAMENTO, Calif. (AP) — The country's most populous state could become the first to require a portion of new truck sales be electric or “zero emission” vehicles as California grapples with how to clean up its worst-in-the nation air quality. > Home to the two largest ports in the country in Los Angeles and Long Beach, California has roughly 1.5 million medium and heavy duty trucks on the road that spew harmful pollutants as they haul freight to warehouses. The state's transportation sector accounts for 41% of all greenhouse gas emissions, a cause of climate change, and is a major source of ozone and particulate matter pollution that can cause respiratory problems.