He studies the climate system, including the processes by which climate change could impact agriculture, water resources, and human health. Dr. Diffenbaugh teaches a freshman Introductory Seminar about climate change (EESS 41N - The Global Warming Paradox), and also teaches upper-division and graduate courses about climate and the Earth System. He is also the Faculty Director of the Goldman Honors program, a cross-campus program for seniors pursuing undergraduate honors in environmental science, technology and policy. Outside of Stanford, Dr. Diffenbaugh has served as an Editor of the peer-review journal Geophysical Research Letters, a Lead Author for Working Group II of the Intergovernmental Panel on Climate Change (IPCC), and as a Google Science Communication Fellow.