Offering insight into emerging trends and advances in science, Cutting Edge is a live lecture series produced exclusively by AAAS. Our latest addition to the series, Cutting Edge: Art & Science of Climate change offers unique, high level insights into changes under way in the Arctic. In this video, Janet Jansson, a senior staff scientist at Lawrence Berkeley National Laboratory's Earth Sciences Division and adjunct professor in the Department of Plant and Microbial Biology at University of California, Berkeley, discusses how a warming climate will impact microbial decomposition of carbon stored in Arctic permafrost.