- Associate Professor
- Carnegie Science Hall, Room 214
Ph.D., Colorado; M.Sc., B.Sc., Delaware
Professor Johnson has research interests involving the analysis of organic matter preserved in the geologic record for reconstructing paleoenvironments and paleoclimates through key periods of modern human expansion around the globe. She is currently focused on the analysis of organic compounds derived from specific sources (i.e., biomarkers) to study paleovegetation and paleoenvironments in Australia before and after the arrival of the first human immigrants nearly 60,000 years ago. She is also doing paleoclimatological research on lake sediments in NE Siberia.