California to transition to 100 percent electric buses by 2040

Proterra Catalyst electric busCalifornia adopted a plan to convert all city buses in the state to electric power by 2040, and hopes to beat that deadline by five years. In terms of cleaning up air quality and improving health, buses can deliver a lot quicker bang for the buck than electric cars. The California Air Resources Board says converting the state's 12,000 buses to...