Holly Stein, senior research scientist and professor in the Department of Geosciences and founding director of the AIRIE program, is the recipient of the 2020 Bunsen Medal in Geochemistry awarded by the European Geosciences Union. The medal acknowledges her pioneering research in Rhenium-Osmium isotope geochemistry, a radiometric dating method that addresses paleoclimate crises, mass extinctions,and accumulation of mineral and hydrocarbon resources. Stein will deliver a lecture at the medalceremony in Vienna next May.