About 80 percent of new cars sold in Norway are battery-powered. As a result, the air is cleaner, the streets are quieter and the grid hasn’t collapsed. But problems with unreliable chargers persist.
Government scientists have spent a year analyzing electric vehicles to help the E.P.A. design new tailpipe rules to trigger an electric car revolution.
With airplanes producing a large amount of climate-warming emissions, a growing number of travelers are signing pledges to keep their journeys on the ground.
