Bandag manufactures and sells precured tread rubber, equipment, and supplies for retreading tires. Tire retreads provide an environmental benefit by reusing worn tires. Compared to the manufacture of new tires, this process reduces the number of worn tires entering the waste stream and saves oil. Catalytica develops, manufactures and markets catalysts for manufacturing processes and energy generation. NOx is one of the six greenhouse gases contributing to global climate change.
Natural gas is a cleaner burning fossil fuel than coal or oil.
The company's filters are used to control air quality in a variety of commercial and industrial settings. For more information on the Equity Fund's holdings, review the latest Semi-Annual Report dated January 31, 2001. The holdings of the Green Century Equity Fund may change due to ongoing management. References to specific investments should not be construed as a recommendation of the securities by the Green Century Funds or their distributor. The Green Century Equity Fund seeks to avoid investing in companies with the worst environmental and social records.