Biofuels

1. Biofuels: Journey to Forever - how to make your own clean-burning ...
Biofuels site provides comprehensive information about biodiesel and ethanol
with a lot more about environment friendly nature of biofuels.

2. NREL: Learning - Biofuels
Jul 25, 2008 ... Unlike other renewable energy sources, biomass can be converted directly into
liquid fuels, called "biofuels," to help meet transportation ...

3. BIOFUELS
Biofuels are increasingly of interest as an alternative to fossil fuels.

4. Biofuels Deemed a Greenhouse Threat - New York Times
Feb 8, 2008 ... The full emissions costs of producing biofuels are higher than those of
producing of conventional fuels, scientists said.