People of Long Now

Sara Imari Walker

Long Now Speaker

Sara Imari Walker is the deputy director of the Beyond Center for Fundamental Concepts in Science and professor at Arizona State University, a fellow of the Berggruen Institute, and an external faculty member at the Santa Fe Institute. She leads one of the largest international theory groups in origins of life and astrobiology, working to understand the evolution of life on our planet and in the universe. With a background in theoretical physics, Walker uses an interdisciplinary set of approaches to explore the problems of the origin and definition of life. Walker co-founded the astrobiology social network SAGANet, is on the board of directors for Blue Marble Space, and is author of Life As No One Knows It: The Physics of Life's Emergence.

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