Civil society organisations have previously raised concerns that expert groups writing geoengineering sections of the IPCC report were dominated by US, UK and Canadian geoengineering advocates who have called for public funding of large-scale experiments or who have taken out commercial patents on geoenginering technologies. One scientist who served as a group co-chair, David Keith of Harvard University, runs a private geoengineering company, has planned tests in New Mexico, and is publicising a new book called The Case for Climate Engineering.