By Scott Slovic (University of Idaho, USA), Swarnalatha Rangarajan (Indian Institute of Technology Madras), Vidya Sarveswaran
By John Clare
By Richard McElreath (Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany)
By H. Herring
By Ian Bailey, Hugh Compston
By Rob van Tulder (Erasmus University, The Netherlands), Rob Tilburg, Mara Francken, Andrea Rosa (Rotterdam School of Management, Erasmus University
By Author M. Unknown
By Stephen Lea
By Michael Common (University of Strathclyde), Sigrid Stagl (University of Leeds)
By Pickering, K.T., Owen, Lewis A.
By Daniel D. Chiras
By Scott Spoolman (President, Earth Education and Research), G. Miller (President
By Prof Keith Smith (University of Stirling, UK), keith smith
By John Pickford
By Schon, Donald A.
By Forster, George
By Gabriela Kutting
By Christian Ludwig, Stefanie Hellweg, Samuel Stucki
By Matthew Alan Cahn, Rory O'Brien (Cleveland State University, USA (Emeritus))
By Vaclav Smil (Distinguished Professor Emeritus, University of Manitoba)
By David Elliott
By Theodore Goldfarb (SUNY, Stony Brook, USA)
By United Nations WWAP
By John Foster (Lancaster University, UK)
By Lynton Keith Caldwell
By Timothy Doyle, Doug McEachern
By H.P. Rossmanith
By Ingemar Cox (Professor, university college, London, U.K.), Matthew Miller (NEC, Princeton, NJ, U.S.A.), Jeffrey Bloom (Thomson, Mathew Miller
By Robert T. Watson (Intergovernmental Panel on Climate Change)
By Nick Middleton