Industrious Activist

Like many people concerned about pollution and climate change, Lars G. Josefsson believes that the world's electricity companies urgently need to clean up their act. Utilities are the single biggest source of carbon dioxide emissions on the planet and Josefsson, an engineer by training, says that even though we may not know exactly how severely we are changing the climate, "it is severe enough to act now."

Such talk may be commonplace among environmental activists, but it's all but unheard of in Josefsson's line of business: he's the chief executive of Sweden's state-owned Vattenfall, one of the biggest...

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