Are there universal laws of life and can we find them? Is there a physics of society, of ecology, of evolution? Join us for six episodes of thought-provoking insights on the physics of life and its profound implications on our understanding of the universe. In this season of the Santa Fe Institute’s Complexity podcast’s relaunch, we talk to researchers who have been exploring these questions and more through the lens of complexity science. Subscribe now and be part of the exploration!
https://complexity.simplecast.com
episode 41: Natalie Grefenstette on Agnostic Biosignature Detection
Is there life on Mars? Or Titan? What are we even looking for? Without a formal definition, inquiries into the stars just echo noise. But then, perhaps, the noise contains a signal… To find life elsewhere in the universe requires us to wager a defined biology, to come to terms with what it means to be alive. Looking out is looking in, to ask the hardest question ever: How do we find something we might not recognize as what we’re seeking?
Welcome to COMPLEXITY, the official podcast of the Santa Fe Institute. I’m your host, Michael Garfield, and each week we’ll bring you with us for far-ranging conversations with our worldwide network of rigorous researchers developing new frameworks to explain the deepest mysteries of the universe.
This week we talk to SFI Program Postdoctoral Fellow Natalie Grefenstette, who works with SFI Professor Chris Kempes (whom we spoke to on Episode 17) on the multi-institution, NASA-funded Agnostic Biosignatures Project. Over the next hour we discuss how new approaches to astrobiological research may help science finally define the nature of living systems, and where and how to find them in the cosmos.
For show notes, research links, transcripts, and more, visit complexity.simplecast.com.
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Natalie’s website:
https://nataliegref.weebly.com/
Natalie’s Google Scholar page:
https://scholar.google.com/citations?hl=en&user=fbHyA3IAAAAJ&view_op=list_works&sortby=pubdate
"Adaptive properties of the genetically encoded amino acid alphabet are inherited from its subsets"
https://www.nature.com/articles/s41598-019-47574-x.pdf
"Agnostic Approaches to Extant Life Detection"
https://www.hou.usra.edu/meetings/lifeonmars2019/pdf/5026.pdf
"Agnostic Polymer Detection Using Mass Spectrometry for Astrobiological Samples"
https://www.hou.usra.edu/meetings/lpsc2020/pdf/2706.pdf
"Mars Extant Life: What's Next? Conference Report"
https://www.liebertpub.com/doi/full/10.1089/ast.2020.2237
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