Planetary Differentiation on Earth and its Implications: From The Solar Nebula to Today with Kevin Wheeler Originally presented 10 Feb 2007 Where Is He Now? http://www.ldeo.columbia.edu/about-ldeo/alumni/alumni-profile-kevin-wheeler-usaid-phd-07 We are pleased to feature Kevin Wheeler, who will defend his doctoral dissertation within the next month or so. Kevin completes five years of studying the chemical composition of the … Continued