Andrew Goudie is the author of Environmental Change (OUP) which has sold over 2,000 copies in its third edition (1992). He is President of the Geographical Association and a former Chairman of the British Geomorphological Research Group, and Deputy Leader of the International Karakoram Projects and Kora Project. He has been presented with the Founder's Medal of the Royal Geographical Society, the Cuthbert Peek award, the Geographic Society of Chicago Publication award, and the Mungo Park Medal. Denys Brunsden is Chairman of the Working Party for Collaboration in International Geomorphology