Speakers

Daniel Sigman studies the global cycles of biologically active elements, in particular nitrogen and carbon. He also investigates the history of these cycles in order to understand the causes of past changes in the atmospheric concentration of carbon dioxide, the role of greenhouse gas in the waxing and waning of ice ages, and the ocean’s response to climate change. Sigman received a B.S. from Stanford University in 1991 and a PhD. from the Massachusetts Institute of Technology/Woods Hole Oceanographic Joint Program in Oceanography in 1997. He was awarded a MacArthur Fellowship in 2009.