http://www.pri.org/stories/2016-02-18/swedens-capital-its-way-becoming-fossi...

"At the recent Paris climate summit, world leaders set an ambitious global target: no net carbon emissions by mid-century http://www.theguardian.com/environment/2015/dec/06/paris-climate-change-summit-richard-branson. That means all of the carbon we burn from fossil fuels must be absorbed by the world’s forests and oceans. Achieving that — well, easier said than done.

Yet, in the city of Stockholm, city leaders are looking to blow past that goal — they want to be a completely fossil fuel free city by the year 2040. That presents a major transportation and urban planning challenge, but the city is already well on its way. It's getting there through a series of carrots and sticks."