The New York Times (12/2, Marshall) reported that "the city of San Francisco...completed a yearlong project to convert its entire array of diesel vehicles...to biodiesel, a clean-burning and renewable fuel that holds promise for helping to reduce greenhouse gases." The fleet of 1,500 vehicles is using B20, a mix of 20 percent "virgin soy oil bought from producers in the Midwest," and 80 percent petroleum diesel fuel. The city's effort is "intended to sharply reduce toxic diesel exhaust linked to a higher risk of asthma and premature death." The city has pledged to cut its emissions to "20 percent below 1990 levels by 2012." In addition, the city has started SFGreasecycle, "a program to collect fats and cooking oils from restaurants" and convert them to biodiesel fuel.
Snipped from ASEE First Bell Customized Briefing