18 | Clifford Johnson on What's So Great About Superstring Theory

18 | Clifford Johnson on What's So Great About Superstring Theory

String theory is a speculative and highly technical proposal for uniting the known forces of nature, including gravity, under a single quantum-mechanical framework. This doesn't seem like a recipe for creating a lightning rod of controversy, but somehow string theory has become just that. To get to the bottom of why anyone (indeed, a substantial majority of experts in the field) would think that replacing particles with little loops of string was a promising way forward for theoretical physics, I spoke with expert string theorist Clifford Johnson. We talk about the road string theory has taken from a tentative proposal dealing with the strong interactions, through a number of revolutions, to the point it's at today. Also, where all those extra dimensions might have gone. At the end we touch on Clifford's latest project, a graphic novel that he wrote and illustrated about how science is done. Clifford Johnson is a Professor of Physics at the University of Southern California. He received his Ph.D. in mathematics and physics from the University of Southampton. His research area is theoretical physics, focusing on string theory and quantum field theory. He was awarded the Maxwell Medal from the Institute of Physics. Johnson is the author of the technical monograph D-Branes, as well as the graphic novel The Dialogues. Home page Wikipedia page Publications A talk on The Dialogues Asymptotia blog Twitter

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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

54 | Indre Viskontas on Music and the Brain

54 | Indre Viskontas on Music and the Brain

It doesn't mean much to say music affects your brain — everything that happens to you affects your brain. But music affects your brain in certain specific ways, from changing our mood to helping us le...

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

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