An expert workshop was held at the Calouste Gulbenkian Foundation in Lisbon, Portugal on 20 and 21 April 2009. Attended by experts from science, business and governments, from North and Central America, Europe, Russia and China, the discussion was held under Chatham House Rules in order to encourage free discussion of geoengineering’s many risk governance issues.
The workshop was convened by the Portuguese Ministry for Science, Technology and Higher Education together with the Portuguese Science and Technology Foundation, The Calouste Gulbenkian Foundation and the International Risk Governance Council and organised in close cooperation with the Carnegie-Mellon Portugal Program, the National Science Foundation Climate Decision Making Center at CMU and the Energy and Environmental Systems Group of the University of Calgary.