Peter B. deMenocal is a professor in the Department of Earth and Environmental Sciences at Columbia University. He uses geochemical analyses of ocean sediments to understand past changes in tropical ocean temperatures and terrestrial climate with a special interest in understanding African paleoclimate change and its influence on human evolution and culture. deMenocal is a fellow of the American Geophysical Union, an AGU Emiliani Lecturer, and a recipient of the Columbia Lenfest Distinguished Faculty Award. He presently leads Columbia’s new Center for Climate & Life.