- BSc, Geology, Chemistry, Iowa State University
- MSc, Geology, Iowa State University. Project: Correlation of tuffs in the Lake Rudolf region of Kenya
- PhD, Geology, University of California Berkeley. Project: Paleochemistry of Lake Turkana
I use stable isotopes to understand ecological questions such as soil formation, animal physiology, wildlife ecology, and climate change. I work on time scales that include current (and future) events, but also work on fossil systems up to millions of years old.