His 2019 book, How to Save the World, provides insightful guidelines for charitable giving.
He is also the founder of both the Rainbow Research Inc., and the Effective Communities Project (ECP), an evidence-based resource to help nonprofits, foundations, and others working in social justice issues and initiatives to strengthen communities and cause-based organizations.
Mayer also generates occasional Commentary via posts and podcasts on the current situation in 2026 America.
