There are no emissions of pollutants or noise from these electric buses that receive power from overhead wires; but it's the wires that are viewed by some as visual pollution. Powered from the city's hydroelectric dam, they are truly carbon-free.
Dec 15, 2013 San Francisco Chronicle
Despite widespread budget woes and austerity programs, European cities are pushing forward with plans to reduce greenhouse gas emissions by retrofitting existing transit systems in a "slow-motion revolution" in electric transport, reports Erica Gies.
Jul 8, 2013 The New York Times
Induction charging, the same technology that allows you to juice up your cell phone without the need for cables, could be coming to a transit system near you. Could eliminating the need for catenary wires transform city streets?
Dec 4, 2012 Wired