ScienceDaily: If every other passenger car in Norway is plugged into the electric network by 2020, Europe will have to produce more electricity -- mainly from coal-fired power plants -- to meet the demand. But it will be a plus for the climate nonetheless. As has been widely reported in the BBC and The New York Times, Norway is really big when it comes to electric vehicle sales, with electric cars making up one-fifth of all new car purchases this year. That's good, you might think, because Norway's electricity...