Physics of Life, Time, Complexity, and Aliens (2024)
Sara Imari Walker is an American theoretical physicist and astrobiologist with research interests in the origins of life, astrobiology, physics of life, emergence, complex and dynamical systems, and artificial life. Walker is deputy director of the Beyond Center for Fundamental Concepts in Science at Arizona State University (ASU), associate director of the ASU-SFI Center for Biosocial Complex Systems and an associate professor at ASU. She is a co-founder of the astrobiology social network SAGANet, and on the board of directors for Blue Marble Space, a nonprofit education and science organization. As a science communicator, she is a frequent guest on podcasts and series, such as Through the Wormhole with Morgan Freeman.
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Date
Duration
Word Count
Popularity
Date
May 28, 2025
Format
Lecture
Duration
01:10:00
Starting from the simplest precursors, Walker assembles a grand cathedral of meaning, tracing an arc across existence that links the fundamentals of organic chemistry, the possibility space of lego bricks, and the materialist philosophy of Madonna.
Date
June 13, 2024
Format
Discussion
Word Count
28,330
Duration
02:51:58
Quotes
32
Views
466
Sara Walker and Lex Fridman explore life’s grand mysteries, touching on the nature of existence and the origins of life to the potential of artificial intelligence and the future of consciousness. Walker’s unique perspective challenges conventional wisdom, inviting us to reconsider our place in the cosmic dance.
Date
February 6, 2013
Format
Research Article
Views
41
In a realm where physics meets the essence of life, Walker and Davies explore how life’s complexity might be encoded in algorithms. They suggest its emergence is akin to a phase transition, where information gains control over matter. This shift in causal dynamics could mark the boundary between non-life and life, offering a fresh perspective on the unique information processing that characterizes living systems.