F. Stuart Chapin, III is an ecosystem ecologist whose research addresses the sustainability of ecosystems and human communities in a rapidly changing planet. This work emphasizes the impacts of climate change on Alaskan ecology, subsistence resources, and indigenous communities, as a basis for developing climate-change adaptation plans. Pamela Matson is dean of the School of Earth Sciences at Stanford University, USA. She previously worked at NASA and at the University of California Berkeley. Her professional titles at Stanford are Chester Naramore Dean of the School of Earth Sciences, and Richard and Rhoda Goldman Professor of Environmental Studies. Peter Vitousek is at the forefront of research on biological diversity, his research focus is Hawaii. His Stanford Lab is studying nutrient cycling in forest ecosystems as well as the effects of invasions by exotic species.