Sara Walker
Astrobiologist and Theoretical Physicist , Arizona State University
Sara Walker is an astrobiologist and theoretical physicist at Arizona State University, where she is deputy director of the Beyond Center for Fundamental Concepts in Science and Professor in the School of Earth and Space Exploration and the School of Complex Adaptive Systems. She is a member of the external faculty at the Santa Fe Institute and a fellow at the Berggruen Institute.
Written by Sara Walker
essay
Physics
Time is an object
Not a backdrop, an illusion or an emergent phenomenon, time has a physical size that can be measured in laboratories
Sara Walker & Lee Cronin
essay
Biology
Life ≠ alive
A cat is alive, a sofa is not: that much we know. But a sofa is also part of life. Information theory tells us why
Michael Lachmann & Sara Walker