Modelling drought impacts on population patterns on the North American Great Plains.
Assessments of the impacts of climate change and drought on global migration patterns for the World Bank and the UN Convention on the Control of Desertification.
Leading a multi-institution study of environmental impacts on migration to Canada.
Coordinating a conference on environmental migration to North America, funded by the US Department of State.
Co-directing the popular citizen science projects RinkWatch and NatureWatch.