Can a company Increase its sales and reduce its carbon footprint? You bet, according to Unilever chief executive Paul Polman. Speaking at the Economist’s Sustainability Summit, Polman urged businesses to take action on climate change after the failure of politicians to agree on meaningful targets at the recent Copenhagen Summit. Polman said that Unilever has set itself the challenge of doubling the size of its business while at the same time reducing its environmental footprint. He said th...