Concerned that cheating on vehicle emissions could be prevalent across the automobile industry, regulators in the United States and Canada are significantly expanding their on-the-road emissions tests to cover all makes and models of diesel cars.

Some 51 percent of North American supply chain executives say that developing a sustainable supply chain is a strategic priority, according to a survey from West Monroe Partners, a business and technology consultancy.

Natural gas and renewable power plants will account for almost all the new capacity to be installed in the United States for the "foreseeable future" while the number of coal-fired power plants will continue to decrease, according to a report by PEW Charitable Trusts.