Multinational corporations

Rome - The global supply chains of multinational companies such as BP, Coca-Cola and Walmart are responsible for nearly a fifth of climate-changing carbon dioxide emissions, according to a new study. But the businesses outsource many of these emissions to poorer parts of the world by investing in production in developing countries, said researchers from University College London and China's Tianjin University. Dabo Guan, the study's co-author, called the work the "first quantitative evidence" on the investment flows and carbon footprints of multinational enterprises (MNEs).