My interests are in climate variability across a wide range of time scales. I'm particularly interested in how present day climate differs from climates in the past, and what may have caused climates to change. I have written or edited eleven books on climatic change and paleoclimatology, including Paleoclimatology: Reconstructing Climates of the Quaternary, and I've authored over 120 articles on these topics. My research group is supported by grants from NSF, NOAA, and the Department of Energy. If you are interested in graduate or post-doctoral research in the Climate System Research Center, contact me via email.