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I am fascinated by past climate changes and how they relate to landscapes and ecosystems over years to millennia. I am interested in temperature and moisture variability. To understand these changes, I use geologic archives like the placement of landforms, stratigraphic sections, the shapes of lake basins, and lake sediments to interpret records of past environmental changes. I use a mixture of geologic mapping, sonar imaging, remote sensing, geologic sampling, and laboratory techniques to develop records of Earth's history. I apply geologic dating techniques like U-Th, 14C, and 10Be dating to determine the timing of events. Understanding the timing and magnitude of climate change events at individual locations is vital for expanding the network of records needed for hypothesis testing of climate change mechanisms and for testing our most advanced climate models.