1. Avoiding Dangerous Climate Change: International Symposium on the Stabilization of Greenhouse Gas Concentrations (Report of the International Scientific Steering Committee, Hadley Centre, Met Office, Exeter, UK, 2005);
http://www.stabilisation2005.com/Steering_Commitee_Report.pdf
2. Walker, G. & King, D. The Hot Topic: How to Tackle Global Warming and Still Keep the Lights On (Bloomsbury, New York, 2008).
3. BBC News 7 June 2007;
http://news.bbc.co.uk/1/hi/world/europe/6731045.stm
4. Towie, N. Nature News 6 December 2007;
http://www.nature.com/news/2007/071206/full/news.2007.361.html
5. Lenton, T. & Schellnhuber, J. Nature Reports Climate Change 1, 97–98 (2007).