Eva Panagiotakopulu is a palaeoecologist who specialises on Quaternary fossil insects and has worked on biogeography, climate change and human impact from sites ranging from the North Atlantic to North Africa. She has a particular interest in islands and human impact. Jon Sadler is a biogeographer and ecologist whose research focuses on species population and assemblage dynamics in animals (sometimes plants). His work is highly interdisciplinary, bisecting biogeography, ecology, urban design, riparian management and island biogeography.