Blue and Green: A group of 128 companies and 49 investors, worth $800 billion in assets, has sent letters of support to Barack Obama, backing the presidents new guidelines unveiled on Monday to cut pollution from power plants. Signatories of the letters include multinational businesses Unilever, Starbucks, Nike, Adidas, Mars and Ben & Jerrys and leading investors Calvert Investments, F&C Management and Impax Asset Management US. They have expressed support for the new rules which were announced by the US Environmental...