Leaving home

His most recent research and writing concern the earth’s population and agricultural carrying capacity and the pressures behind the rising number of refugees in the world. He has published on topics ranging from international trade and debt to fisheries, tobacco, energy, and infant mortality, among many others, and he is a principal author of the annual Vital Signs: The Trends That Are Shaping Our Future,author of Time for Change: A New Approach to Environment and Development,and coauthor with Lester Brown of Full House: Reassessing the Earth’s Population Carrying Capacity.