Archaeology and human paleoecology.
My primary research focus is the global dispersal of anatomically modern humans, which began more than 50,000 years ago in Africa. My specific geographic focus is Eastern Europe, where I have done field and lab research since the late 1980s. Since 2001, I have been working at open-air sites on the East European Plain, in both Russia and Ukraine, that were occupied by modern humans more than 30,000 years ago. In 2012, I began a new field project at Mira, located on the Lower Dnepr River. I also have worked for many years in Alaska. Recently, my Alaskan research has addressed questions about the emergence of Inupiaq settlement and economy on the coast of NW Alaska, and in 2011 I completed the field phase of a multi-year project at Cape Espenberg (northern Seward Peninsula).
- Outstanding Academic Title ("Modern Humans: Their African Origin and Global Dispersal"), Choice Book Awards, 2019
- Outstanding Academic Title ("Human Ecology of Beringia"), Choice Book Awards, 2008
- Honorary Professor, Russian Academy of Sciences (Institute of Material Culture History), 2005