He conflates rates of growth with actual numbers. It is true that the rate of population growth worldwide has declined since 1970. However, the base population has grown by more than three billion; thus we currently add 80 million or more people to the planet each year. That is hardly defusing population growth!
Still, religious peacebuilding is a developing concept. Most of the literature regarding religion and peacebuilding is in the form of case studies, that is stories of specific events, groups, and individuals.
Peace Corps definition, a civilian organization, sponsored by the U.S. government, that sends volunteers to instruct citizens of underdeveloped countries in the execution of industrial, agricultural, educational, and health programs. See more.