For 15 years, I taught courses on Quaternary geology, paleoclimate, energy and climate change, Earth surface processes, polar environments, and science communication at Northwestern University, where I was William Deering Professor. I directed a research group focused on past climate change. Our work was motivated by the question: “What can we learn from Earth’s past that will shed light on the future?”

I have led, planned, or joined research expeditions in the Arctic (from Alaska to Iceland) and U.S. “lower 48” for about 25 years. Recently I have focused on Kalaallit Nunaat (known in English as Greenland), where the Northern Hemisphere’s only continent-scale ice sheet is beginning to alter global sea level.

Now I’ve relocated to Boston, to return to my New England roots, and I am Adjunct Professor at Northwestern. My latest adventures focus on writing and speaking about science and our shared climate future.