RAW MATERIAL FOR A BIODIGESTER. A group of students from around the world, attending the first International Development Design Summit (IDDS) at
MIT, drove to Carlisle last week with participant Ariel Phillips of Estabrook Road, to collect manure for a biodigester project. (A biodigester is a container in
which manure and other biological waste is broken down by bacteria so that it emits methane. The methane is collected and used as a fuel for cooking and
other household purposes.) Phillips took the group to her neighbors, the Hartes, to dig for chicken manure and to Dick Shohet's to collect cow manure.
(Photo by Ellen Huber)