Rephonic
Artwork for The Joy of Why
Artificial Intelligence
Evolutionary Biology
Mathematics
Quantum Computing
Natural Selection
Birds
Time
Altruism
Neuroscience
Multicellularity
String Theory
Quantum Mechanics
Astrobiology
Dark Energy
Black Holes
Cell Death
Yeast
Depression
Error-Correcting Codes
CRISPR

“The Joy of Why” is a Quanta Magazine podcast about curiosity and the pursuit of knowledge. The mathematician and author Steven Strogatz and the cosmologist and author Janna Levin take turns interviewing leading researchers about the great scientific and mathematical questions of our time. New episodes are released every other Wednesday.

Quanta Magazine is a Pulitzer Prize–winning, editorially ind... more

PublishesTwice monthlyEpisodes75Founded5 years ago
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Life SciencesScience

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Artwork for The Joy of Why

Latest Episodes

Quantum mechanics may be one of the most precisely tested paradigms in science, but there’s still no universally accepted interpretation of what it tells us about reality. How do we get from the wave-like behavior of quantum systems to the solid, mac... more

Mathematicians are witnessing a profound shift in their field. AI systems are now producing proofs, spotting connections between distant fields, and, in a few cases, solving problems that had stumped mathematicians for decades. The pace of progress o... more

YouTube

When an LLM answers a question, is it reasoning like humans, or just producing text that looks like reasoning? The distinction isn’t just philosophical, this determines what we can trust AI to do, how closely we need to supervise it, and ultimately w... more

YouTube

Pain and pleasure seem like simple facts of life, but they are far from it. Neuroscientists still cannot say why physical pain differs from psychological pain, for instance, nor why a loved one’s touch soothes while a stranger’s touch repels.

To exp... more

YouTube

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Recent Guests

Akshay Venkatesh
Mathematician, Institute for Advanced Study
Institute for Advanced Study
Episode: Live from ICM 2026: What Is Math For in the Age of AI?
Ravi Vakil
Mathematician, Stanford University
Stanford University
Episode: Live from ICM 2026: What Is Math For in the Age of AI?
Alex Kontorovich
Mathematician, Rutgers University
Rutgers University
Episode: Live from ICM 2026: What Is Math For in the Age of AI?
Melanie Mitchell
Cognitive scientist and computer scientist at Santa Fe Institute
Santa Fe Institute
Episode: Are We Thinking Correctly about AI Intelligence?
Ishmail Abdus-Saboor
Neuroscientist exploring the skin-brain axis, Columbia University Zuckerman Institute
Columbia University
Episode: How Does Touch Lead To Pain Or Pleasure?
Adam Riess
Johns Hopkins astrophysicist and Nobel Prize winner in Physics (2011) for the accelerating expansion of the universe
Johns Hopkins University; Space Telescope Science Institute
Episode: How Fast Is the Universe Really Expanding?
David Kipping
Columbia University astronomer
Columbia University
Episode: Will We Ever Find Alien Civilizations?
Jennifer Doudna
Biochemist, biophysicist, and structural biologist; Nobel Prize in Chemistry 2020
UC Berkeley; Innovative Genomics Institute
Episode: What’s the Future of Gene Editing?
Lauren Williams
Mathematician
Episode: More Conversations, Complex Questions, and Bold Ideas in Season Five of ‘The Joy of Why’

Hosts

Steven Strogatz
Host of The Joy of Why; mathematician with ties to Quanta Magazine and Harvard/Quanta affiliations. Brings a mathematical perspective and a knack for accessible questioning.
Janna Levin
Co-host with a background in cosmology and philosophy of physics; hosts discussions that bridge deep theory with broader implications.

Reviews

4.9 out of 5 stars from 1.9k ratings
  • Thoughtful and engaging

    I love how the episodes usually begin and end with a conversation between Janna and Steve. It helps me process the fascinating interview sandwiched between.

    Apple Podcasts
    5
    Showeropera
    United States16 days ago
  • AI

    The biggest issue for AI is they don’t have feelings. I think humans are mostly feeling creatures even though we think we’re thinking creatures. Love the show!

    Apple Podcasts
    5
    MJMJMJMJM12345
    United Statesa month ago
  • Misinformation

    The host draws a line between math and science. It is a science, and I would encourage inquisitive minds avoid this podcast.

    Apple Podcasts
    1
    Figgans
    United Statesa month ago
  • mid

    gets boring after 2 episode

    Apple Podcasts
    1
    no nickname girl1800
    United States2 months ago
  • not just a pretty title

    if you are curious, but, like me, don't have much knowledge of things scientific, this podcast will satisfy and intrigue you: the hosts are very quick to come up with analogies which synthetise and clarify what the specialist interviewee is on about—great fun!

    Apple Podcasts
    5
    Diversifolia
    Italy2 months ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Listeners praise the hosts' ability to make dense topics accessible without oversimplifying.
Some episodes are perceived as too technical for casual listeners but rewarding for deep learners.
Guests are consistently high-caliber, with discussions that stay engaging across disciplines.
Audience feedback highlights strong interview dynamics and broad interdisciplinary appeal.
The show is valued for its curiosity-driven approach and thoughtful questioning.

Chart Rankings

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Talking Points

Recent interactions between the hosts and their guests.

Live from ICM 2026: What Is Math For in the Age of AI?
Q: What is the role of AI in proving or verifying mathematical theorems, and could an AI create a Fermat-like proof from scratch?
There is cautious optimism that AI can contribute to proofs, proofs verification, and new insights, but whether it can generate a fully rigorous, original proof without human knowledge remains an open question; humans still decide what is valuable and how to use AI.
Live from ICM 2026: What Is Math For in the Age of AI?
Q: How do you see the infrastructure around AI and math education changing, particularly for graduate students and trajectories like postdocs?
Panelists suggest a combination of maintaining rigorous human evaluation in admissions and interviews, encouraging productive use of AI as a learning aid rather than a shortcut, and emphasizing understanding and intuition over automated results.
How Fast Is the Universe Really Expanding?
Q: What is the Hubble tension and why does it matter?
The tension is a statistically significant mismatch between the expansion rate inferred from early-universe data (like the cosmic microwave background) and local, late-time measurements; it suggests there may be new physics beyond the standard model or undiscovered systematics in the data.
How Fast Is the Universe Really Expanding?
Q: What is the Lambda CDM model and why is it compelling?
It is a simple, well-tested framework that describes the universe as composed of dark matter, dark energy, and ordinary matter, and it successfully accounts for cosmic expansion, structure formation, and the cosmic microwave background, making it the standard model despite its unknown microphysics.
What’s the Future of Gene Editing?
Q: What are the major barriers to scaling CRISPR therapies?
Financial and regulatory hurdles exist, but there are also scientific challenges like tissue-specific delivery, which need to be solved to provide affordable, accessible treatments beyond a single patient case.

Audience Metrics

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Frequently Asked Questions About The Joy of Why

What is The Joy of Why about and what kind of topics does it cover?

The show blends deep-dive science with accessible conversation across math, physics, biology, and cosmology. Episodes pair seasoned mathematicians with leading researchers to unpack big questions—artificial intelligence, the nature of reality, the biology of touch and pain, cosmic expansion, exomoons, and cutting-edge topics in algebra, CRISPR, and traffic flow. A throughline is curiosity-driven inquiry that balances rigorous explanation with broad context, often highlighting interdisciplinary connections and the limits of current knowledge. Notably, the program frequently features high-profile guests and fosters thoughtful, human-centered discussions that make complex ideas feel relevant to everyday life and future possibilities.

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How many episodes of The Joy of Why are there?

The Joy of Why launched 5 years ago and published 75 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on The Joy of Why?

Recent guests on The Joy of Why include:

1. Akshay Venkatesh
2. Ravi Vakil
3. Alex Kontorovich
4. Melanie Mitchell
5. Ishmail Abdus-Saboor
6. Adam Riess
7. David Kipping
8. Jennifer Doudna

To view more recent guests and their details, simply upgrade your Rephonic account. You'll also get access to a typical guest profile to help you decide if the show is worth pitching.

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