More than 150 companies round the world on Thursday pledged to reduce their carbon emissions voluntarily and raise energy efficiency with targets which they will make public and report on each year starting in July 2008. Leading international groups with high energy consumption including Alcan, Anglo-American and Rio Tinto were among 100 large companies to adopt the "Caring for climate" declaration at the United Nations' Global Compact meeting in Geneva. A further 150 small and medium-sized companies, including a number from China and other emerging economies that are becoming large energy consumers also signed up.