A report released by the Environmental Protection Agency (EPA) shows biodiesel use can reduce emissions of particulate matter by 47% when compared to petroleum diesel in unmodified diesel engines. The report also verified a 67% reduction in unburned hydrocarbons and a 48% reduction in carbon monoxide with pure biodiesel (B100). While the technical report is not an official rulemaking, it provides a government-validated reference for federal, state and local pollution strategies to reduce emissions that are harmful to human health and the environment. EPA prepared the report, a compilation of 39 separate scientific studies, because of increasing interest in biodiesel, a domestically produced alternative fuel that can be made from any fat or vegetable oil. Biodiesel works in any diesel engine with few or no modifications and has achieved a full national standard (ASTM D 6751). The EPA study can be viewed at www.epa.gov/otaq/models/biodsl.htm