New England winters can be harsh, especially for those who can’t afford to heat their homes. When she was in fifth grade Cassandra Lin learned that used cooking oil could be converted into cheap, clean-burning biodiesel to heat homes.
New England winters can be harsh, especially for those who can’t afford to heat their homes. When she was in fifth grade Cassandra Lin learned that used cooking oil could be converted into cheap, clean-burning biodiesel to heat homes.