2011-11-01 The limits to growth – Donella Meadows, Dennis Meadows, Jørgen Randers and Behrens William W. III – 1972 Societies
2002-10-27 A letter published in the reader’s section of “Le Monde” about Jeremy Rifkin and hydrogen Newspaper articles
2004-08-01 The media and climate change: correctly accounting for the existing information, “mission impossible”? Miscellaneous