Paul Bahn is one of the leading writers and broadcasters on archaeology for a popular audience. He is the author of the standard introduction to cave art, Images of the Ice Age, The Bluffer's Guide to Archaeology, and the popular Archaeology: A Very Short Introduction. John Flenley is currently Professor of Geography at Massey University in New Zealand. A world authority on the ecology of tropical rainforests, he was the first to publish evidence that Easter Island was once forested.