This refers to your article “Biofuel spreads its wings” (September 20). It is a clear indicator that our natural resources have more potential than believed earlier. The Indian Institute of Petroleum brought out the supporting factors for optimum tapping of resources for economic good. The items that we had once dismissed as waste can continue to contribute to economic growth. Accordingly, even less productive land containing poor quality soil have potential for an increased generation of income. It increases the quality of functioning of a major industry by reducing fuel costs and decreasing health hazards by controlling carbon emissions. In