One-third of Frito-Lay factories are now "zero landfill" and another third will be so in 2010.
Unilever has reduced its water use by 63% and its CO2 emissions by 39% since 1995.
Disney visits 3,500 factories each year to inspect worker-safety and labor practices.
General Mills has reduced packaging in Yoplait yogurt by 20%, saving 1,200 tons of plastic every year.
A version of this article appeared in the February 2010 issue of Fast Company magazine.