175 | William Ratcliff on Multicellularity, Physics, and Evolution

175 | William Ratcliff on Multicellularity, Physics, and Evolution

We've talked about the very origin of life, but certain transitions along its subsequent history were incredibly important. Perhaps none more so than the transition from unicellular to multicellular organisms, which made possible an incredible diversity of organisms and structures. Will Ratcliff studies the physics that constrains multicellular structures, examines the minute changes in certain yeast cells that allows them to become multicellular, and does long-term evolution experiments in which multicellularity spontaneously evolves and grows. We can't yet create life from non-life, but we can reproduce critical evolutionary steps in the lab.

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William Ratcliff received his Ph.D. in Ecology, Evolution, and Behavior at the University of Minnesota. He is currently Associate Professor in the School of Biological Sciences at Georgia Tech. Among his awards are a Packard Fellowship and being named in Popular Science's "Brilliant 10" of 2016.


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62 | Michele Gelfand on Tight and Loose Societies and People

62 | Michele Gelfand on Tight and Loose Societies and People

Physicists study systems that are sufficiently simple that it's possible to find deep unifying principles applicable to all situations. In psychology or sociology that's a lot harder. But as I say at ...

2 Sep 20191h 12min

61 | Quassim Cassam on Intellectual Vices and What to Do About Them

61 | Quassim Cassam on Intellectual Vices and What to Do About Them

All of us have been wrong about things from time to time. But sometimes it was a simple, forgivable mistake, while other times we really should have been correct. Properties that systematically preven...

26 Aug 20191h 10min

60 | Lynne Kelly on Memory Palaces, Ancient and Modern

60 | Lynne Kelly on Memory Palaces, Ancient and Modern

Memory takes different forms. Memories can be encoded in the strength of neural connections in our brains, but there's a sense in which photographs and written records are memories as well. What did p...

19 Aug 20191h 15min

59 | Adam Becker on the Curious History of Quantum Mechanics

59 | Adam Becker on the Curious History of Quantum Mechanics

There are many mysteries surrounding quantum mechanics. To me, the biggest mysteries are why physicists haven't yet agreed on a complete understanding of the theory, and even more why they mostly seem...

12 Aug 20191h 40min

58 | Seth MacFarlane on Using Science Fiction to Explore Humanity

58 | Seth MacFarlane on Using Science Fiction to Explore Humanity

Fiction shines a light on the human condition by putting people into imaginary situations and envisioning what might happen. Science fiction expands this technique by considering situations in the fut...

5 Aug 20191h 12min

57 | Astra Taylor on the Promise and Challenge of Democracy

57 | Astra Taylor on the Promise and Challenge of Democracy

"Democracy may not exist, but we'll miss it when it's gone" — or so suggests the title of Astra Taylor's new book. We all know how democracy falls short, in practice, of its lofty ideals; but we can a...

29 Juli 20191h 23min

56 | Kate Adamala on Creating Synthetic Life

56 | Kate Adamala on Creating Synthetic Life

Scientists can't quite agree on how to define "life," but that hasn't stopped them from studying it, looking for it elsewhere, or even trying to create it. Kate Adamala is one of a number of scientist...

22 Juli 20191h 12min

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

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