Heather Viles is a geographer working in the University of Oxford, who teaches geomorphology to undergraduates and masters' level students, and researches on biological influences on geomorphology and the weathering of rocks and building stones. She is currently carrying out research in the Drakensberg Mountains, South Africa, the Namib desert, ruined ancient monuments in England, and is trying to simulate ... Read morethe weathering of rocks on the planet Mars in the laboratory. Andrew Goudie is a Professor of Geography in the University of Oxford and Master of St Cross College. He has worked on many aspects of geomorphology including deserts, the effects of climate change, the links between geomorphology and archaeology, and the conservation of sites of geomorphological interest. Show Less