San Francisco Chronicle: San Francisco will become the first city in the country to convert large batches of “brown grease” – the smelly, mucky mess left over from foods cooked in oil – into biodiesel and other fuels under a program set to start by the end of the year. The $1.2 million pilot program, which is being funded by state and federal grants, will go toward building a grease recycling plant near the city’s Oceanside treatment plant. The program will allow the city to collect about 10,000 gallons a …