Dr. Ghezzehei was a Postdoctoral Fellow (2001-2004) and Geological Scientist (2004-2008) at the Earth Sciences Division, Lawrence Berkeley National Lab. Prior to that Dr. Ghezzehei received his Ph.D. in Soil Science from Utah State University and B. Sc. in Soil and Water Conservation from University of Asmara, Eritrea. Prof. Ghezzehei’s work focuses on physical transformations of soil structure across scales and the associated biophysical processes, including water and nutrient dynamics in the rhizosphere and soil aggregation.