0 a system that measures the financial results of companies that try to protect the environment rather than just make a quick profit:
DJSI World, the Dow Jones' premier sustainability index, identifies the top 10% of best-performing companies in areas of sustainability.
1 a list of product information provided for consumers who want to understand the process involved in making the products they buy and how that process affects the environment:
The sustainability index shows consumers a product's environmental impact.