MICHAEL HELLER is the Lawrence A. Wien Professor of Real Estate Law at Columbia Law School. He is the author of The Gridlock Economy: How Too Much Ownership Wrecks Markets, Stops Innovation, and Costs Lives.
 
JAMES SALZMAN is the Donald Bren Distinguished Professor of Environmental Law, with joint appointments at the UCLA School of Law and the UCSB Bren School of the Environment. He is the author of Drinking Water: A History. - (Random House, Inc.)