See the Teaching sustainability through service learning full program at
http://tilt.colostate.edu/sl/sustain_conference.pdf
I am not involved with it but thought it very interesting to mull over.
FYI,
Charles Wankel
Innovative Approaches to Reducing Poverty see:
http://www.amazon.com/Innovative-Approaches-Reducing-Global-Poverty/dp/1593117523