New York Times: Last year, as United Nations scientists were warning of the perils of man-made climate change, this small country of fjords and factories reacted with an extraordinary pledge: by 2050 Norway would be "carbon neutral," generating no net greenhouse gases into the air. Norway’s bold promise raised the bar for other nations, which were mostly still struggling to figure out how to reduce emissions, by even a fraction. Then, in January, the Norwegian government went a step further: Norway …