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Professor Sara Walker is an astrobiologist and theoretical physicist whose research focuses on the origins of life, artificial life, and the detection of life on other worlds.\xa0She is the author of \u201cLife as No One Knows It: The Physics of Life\u2019s Emergence.\u201d\nhttps://search.asu.edu/profile/1731899\nLearn more about your ad choices. Visit podcastchoices.com/adchoices