Michael Warburton

Michael Warburton has been Executive Director of the Public Trust Alliance since 2002. It is a project of the Resource Renewal Institute (RRI), a national nonprofit organization that promotes comprehensive green planning on state and national levels, based on restoration and sustainable use of natural resources. He collaborated with [Tom Hatley](https://openlibrary.org/authors/OL2663327A/Tom_Hatley) and [Michael Thompson](https://openlibrary.org/authors/OL1006452A/Michael_Thompson) during his time at IIASA in the 80s.