Caterpillar Inc has been selected as a member of the Dow Jones Sustainability World Index (DJSI World) for the fifth consecutive year.

The 2,500 largest companies in the Dow Jones Global Index were assessed in three areas of sustainable development: economic, environmental and social performance. Caterpillar was among 309 companies selected to be listed on the DJSI World.

SAM Group, an independent asset management company that conducted research for DJSI World, said Caterpillar showed product stewardship by "integrating environmental aspects into product development".

Early in 2005, Caterpillar committed to reduce the intensity of its global greenhouse gas emissions by 20 per cent by 2010.