I am a paleoceanographer who uses deep-sea sediments as archives of past climate change. Ocean sediments accumulate slowly but continuously and provide detailed records of past changes in Earth climate and ocean circulation over a wide range of timescales. I’m currently interested in paleoclimate problems that inform human dimensions of climate change.
I’m the founding director of Columbia’s Center for Climate and Life, a research accelerator that mobilizes scientists to understand how climate impacts life’s essentials - the security of food, water, and shelter - and to explore sustainable energy solutions. We partner with industry, finance, and governments, transferring knowledge to inform solutions.