By Claire Thomas
By Simon Parsons
By P. J. Baugh (Senior Lecturer, University of Salford)
By Grant Fowlds, Graham Spence
By Matthew A. Tarr
By Claire Potter
By Alex Rogers
By Porter Fox
By Florence Wilkinson
By Andrew Porteous
By Georges Guiochon (Department of Chemistry, University of Tennessee, Knoxville, TN, USA), Bingchang Lin (Anshan Institute of Iron and Steel, Anshan, Lianing, People's Republic of China)
By Bea Johnson
By The F Team
By Michael Braungart, William McDonough
By P. H. Collin
By Luke Turner
By Jonathan Drori, Lucille Clerc
By Gavin Thurston, Sir David Attenborough
By Rob Percival
By Macfarlane, Robert, Morris, Jackie
By Dr Alain Gachet
By Frank Perry, Lotte Moeller
By Bridget Franklin
By W Hoyle, Mike Lancaster (Chemical Industries Association, UK)
By Paul de Gelder
By Peter H. Kahn
By Hannah Jones (University of Warwick, UK), Emma Jackson (Goldsmiths, University of London