My work brings me into various research projects needing precise isotope composition determinations, allowing me to work closely with faculty as well as undergraduate and graduate students. The approach I use is to involve students as much as possible with hands-on training for sampling, isotope measurement, and data processing. My own research consists of paleo-rainfall reconstructions using the chemistry of speleothems from caves in Alabama (Desoto Caverns and Cathedral Caverns). The most recent focus of this work is understanding how seasonal changes in carbon dioxide in the cave atmosphere affects these paleo-rainfall records.