106 | Stuart Bartlett on What "Life" Means

106 | Stuart Bartlett on What "Life" Means

Someday, most likely, we will encounter life that is not as we know it. We might find it elsewhere in the universe, we might find it right here on Earth, or we might make it ourselves in a lab. Will we know it when we see it? "Life" isn't a simple unified concept, but rather a collection of a number of life-like properties. I talk with astrobiologist Stuart Bartlett, who (in collaboration with Michael Wong) has proposed a new way of thinking about life based on four pillars: dissipation, autocatalysis, homeostasis, and learning. Their framework may or may not become the standard picture, but it provides a useful way of thinking about what we expect life to be.

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Stuart Bartlett received his Ph.D. in complex systems from the University of Southampton. He is currently a postdoctoral researcher in the Division of Geological and Planetary Sciences at Caltech, and was formerly a postdoc at the Earth Life Science Institute at the Tokyo Institute of Technology.


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55 | A Conversation with Rob Reid on Quantum Mechanics and Many Worlds

55 | A Conversation with Rob Reid on Quantum Mechanics and Many Worlds

As you may have heard, I have a new book coming out in September, Something Deeply Hidden: Quantum Worlds and the Emergence of Spacetime. To celebrate, we're going to have more than the usual number o...

15 Juli 20191h 26min

54 | Indre Viskontas on Music and the Brain

54 | Indre Viskontas on Music and the Brain

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8 Juli 20191h 15min

53 | Solo -- On Morality and Rationality

53 | Solo -- On Morality and Rationality

What does it mean to be a good person? To act ethically and morally in the world? In the old days we might appeal to the instructions we get from God, but a modern naturalist has to look elsewhere. To...

1 Juli 20192h 5min

52 | Frank Lantz on the Logic and Emotion of Games

52 | Frank Lantz on the Logic and Emotion of Games

Games play an important, and arguably increasing, role in human life. We play games on our computers and our phones, watch other people compete in games, and occasionally break out the cards or the Mo...

24 Juni 20191h 4min

51 | Anthony Aguirre on Cosmology, Zen, Entropy, and Information

51 | Anthony Aguirre on Cosmology, Zen, Entropy, and Information

Cosmologists have a standard set of puzzles they think about: the nature of dark matter and dark energy, whether there was a period of inflation, the evolution of structure, and so on. But there are a...

17 Juni 20191h 31min

50 | Patricia Churchland on Conscience, Morality, and the Brain

50 | Patricia Churchland on Conscience, Morality, and the Brain

It's fun to spend time thinking about how other people should behave, but fortunately we also have an inner voice that keeps offering opinions about how we should behave ourselves: our conscience. Whe...

10 Juni 20191h 12min

49 | Nicholas Christakis on Humanity, Biology, and What Makes Us Good

49 | Nicholas Christakis on Humanity, Biology, and What Makes Us Good

It's easy to be cynical about humanity's present state and future prospects. But we have made it this far, and in some ways we're doing better than we used to be. Today's guest, Nicholas Christakis, i...

3 Juni 20191h 54min

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