Buses that neither belch pollution nor draw on coal power are starting to appear on city streets, with the support of Silicon Valley and a company backed by Warren Buffett.
Over the next six months, Seattle is rolling out two all-electric buses made by Kleiner Perkins-backed Proterra Inc. The city gets 95 percent of its electricity from renewables, mostly hydroelectric dams that don’t use fossil fuels. So charging the fleet won’t increase emissions.
