Newton, L.H., and C.K. Dillingham. While There Is Still Time. Bernard, Ted, and Yora Young, The Ecology of Hope. It has been used widely as a text and is still in print. A Necessary Unity.
Many courses also use guest speakers and field trips.
The five areas they deal with are humane education, environment, human rights, cultural rights and animal rights. All issues of compassion and non-violence are highlighted in these modules. O only universe we know, forgive us.