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Dr Karl Podcast

triplej
Climate Change
Evolution
Alcohol
Science With Dr Karl Live
Consciousness
Black Holes
Global Warming
Ants
Mathematics
Nutrition
Rainbows
Human Body
Hormones
Bees
Hay Fever
Sustainability
NASA
Misinformation
Wind
Artificial Intelligence

Join Dr Karl Kruszelnicki, Lucy Smith and their scientific guests, with a bunch of curious triple j listeners for a weekly injection of science, myth-bashing and answers!

PublishesWeeklyEpisodes681Founded21 years ago
Number of ListenersCategory
Science

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Artwork for Dr Karl Podcast

Latest Episodes

Is blood really a liquid? Can cats predict a period? And would a soft drink save your life in the wild?

Dr Karl and Dr Theresa Larkin answer these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here h... more

When are we going to start time travelling? Why does our brain slow down in near-death experiences? And how do we know what it's like to lick different surfaces?

Dr Karl, Professor Geraint Lewis and Caitlin Thurn answer these questions and more on ... more

What do we want from the moon? Are our feet faster than us? And what's Dr Karl's favourite flavour of milk?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here ab.co/ask... more

Is it bad to rub your eyes? What do birds get up to during migration? And which hair colour is the strongest?

Zoe Kean answers these questions and more on triple j Mornings with Sam Lane. Got a question for Dr Karl - submit it here ab.co/as... more

Key Facts

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Podcast Host
Number of Listeners
Find out how many people listen to this podcast per episode and each month.

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Recent Guests

Dr Theresa Larkin
Guest expert in anatomy and physiology
University of Wollongong
Episode: The vagus nerves, lightspeed travel and peripheral night vision
Geraint Lewis
Professor, physics/astrophysics, friend of the show
University/academic
Episode: Rogue planets, dark matter and time dilation
Caitlin Thurnett
Physicist/mathematics focused researcher, Artemis Project founder
Artemis Project / University of Melbourne
Episode: Rogue planets, dark matter and time dilation
Zoe Kean
Science writer and communicator and journalist
ABC (Tasmania) and author of Why We Like This
Episode: Leech brains, animal instincts and echidna quirks
Jaxon Liebeck
Flight director for the Blue Ghost lunar mission
Firefly Aerospace
Episode: Faster-than-light travel, the Van Allen Belt and AI space exploration
Dr Laura Driessen
Astronomer who explains space concepts on the show
Astronomer at Australian space research community
Episode: Super voids, satellite noise and asteroid navigation
Zoe Kean OAM
Science journalist and expert in evolution and nature
Episode: Human buoyancy, acclimatising and syncing periods
Dr. Zoe Kean
Evolution expert and friend of the show
Episode: Frisson, cryogenic freezing and thylacines
Paul Dempsey
Lead singer and guitarist of the Australian rock band Something for Kate.
Something for Kate
Episode: Science with Dr. Karl LIVE - Hosted by Lucy Smith: Part Two!

Hosts

Lucy Smith
Co-host and presenter known for her engaging and informative style, facilitating discussions on various scientific topics alongside Dr. Karl.
Dr. Karl Kruszelnicki
Co-host and scientific expert with extensive experience in science communication, known for his humor and accessibility in discussing scientific concepts.

Reviews

4.7 out of 5 stars from 5k ratings
  • Thank you

    Hi Dr Karl and Dr Lucy.

    Thank you so much for your wonderful “Science ” and “Shirtloads” sessions during 2025 and previous years.

    I’ve learnt so much…and love your energy the knowledge you impart.

    I don’t get to hear you live on radio, but I do have every podcast which I listen to (and repeat) …and I look forward to new ones when you return next year.

    I hope 2026 brings health and happiness to you and loved ones.

    Thank you

    Kindest regards

    Connie

    Apple Podcasts
    5
    ceej163
    Australia4 months ago
  • Unbeatable

    I first discovered Dr Karl on BBC Radio 5 many years ago and he kindly answered one of my questions. He’s so enthusiastic about everything and it’s fantastic listening to him speak. 10/10. Absolutely brilliant. He’s so respectful to people who ask questions too.

    Apple Podcasts
    5
    hannakuso
    United Kingdom5 months ago
  • Podcast is a bit off topic

    10/10!!!! Would recommend. But there is one problem with answering the viewers questions which moves my rating to a 4, which is completely going off topic from the question, or trying to ‘guess’ things if you don’t know it. Other than that slight issue I think the podcast is great, entertaining, and I love going to sleep listening to it.

    Apple Podcasts
    4
    HeXym4ti0ns
    Australia5 months ago
  • OMG I LOOOOVE THIS PODCAST ❤️❤️❤️❤️

    10/10!!!! Would recommend

    Apple Podcasts
    5
    HeXym4ti0ns
    Australia6 months ago
  • Dr Karl is a national treasure

    Love Dr Karl. Thank you for being you. Worst thing is the stupid ad for the hack podcast at the end of every episode. Please get rid of it!

    Apple Podcasts
    5
    ReviewsByJames
    Australia7 months ago

Listeners Say

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

Listeners appreciate the engaging and humorous style of the hosts, often describing it as educational and fun.
There's enthusiasm for the ability of the hosts to break down complex scientific concepts into accessible language.
Some feedback highlights an occasional feeling of drifting off-topic during discussions, yet many still find the content overall enjoyable and insightful.

Chart Rankings

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Apple Podcasts
#61
United Kingdom/Science
Spotify
#4
Australia/Science
Apple Podcasts
#217
Australia/Top Podcasts
Apple Podcasts
#5
Australia/Science
Apple Podcasts
#14
Taiwan/Science
Apple Podcasts
#39
Indonesia/Science

Talking Points

Recent interactions between the hosts and their guests.

Rogue planets, dark matter and time dilation
Q: How close is time travel to becoming a reality, and could we build a receiver for future travelers?
Time travel has not been ruled out by relativity equations, but there is no known practical mechanism yet; the idea of a future-to-present receiver remains speculative and theoretical.
Rogue planets, dark matter and time dilation
Q: What is dark matter and why does it matter?
Dark matter is an unseen mass component inferred from gravitational effects; it holds galaxies in their orbits and shapes cosmic structures, comprising a larger share of the universe's matter than ordinary matter.
Rogue planets, dark matter and time dilation
Q: What would happen if we let a nuclear bomb off on the moon, and would it affect Earth's tides or gravity?
The effect would be negligible on Earth's tides; nuclear explosions are tiny compared with the energy required to noticeably affect the Moon or Earth's gravity. The discussion also touched on how truly enormous events in the cosmos dwarf human-scale energies.
Nose picking, dermatillomania and the weight of the world
Q: If you could go anywhere in space, where would you go?
Dr Karl would go into orbit; Lucy would go to the sun, though that is a hypothetical thrill.
Leech brains, animal instincts and echidna quirks
Q: Do migratory birds really rest during long flights, and what supports this behavior?
Birds perform micro-sleeps and rest at stopovers along flyways; long migrations are supported by intermittent sleep and feeding breaks at wetlands and other habitats critical for refueling.

Audience Metrics

Listeners, social reach, demographics and more for this podcast.

Listeners per Episode
Gender Skew
Location
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Professions
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Frequently Asked Questions About Dr Karl Podcast

What is Dr Karl Podcast about and what kind of topics does it cover?

This series engages listeners with humorous and insightful discussions about a wide range of scientific topics, from quirky life hacks and health myths to complex theories about the universe. The hosts, along with guests and listener participation, tackle questions that reflect curiosity about everyday phenomena and broader scientific principles, making science accessible and entertaining. The episodes delve into unique subjects such as the physics of sound, evolutionary biology, and contemporary space exploration, sparking interest in scientific literacy among audiences of various backgrounds.

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How many listeners does Dr Karl Podcast get?

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How many subscribers and views does Dr Karl Podcast have?

To see how many followers or subscribers Dr Karl Podcast has on Spotify and other platforms such as Castbox and Podcast Addict, simply upgrade your account. You'll also find viewership figures for their YouTube channel if they have one.

Which podcasts are similar to Dr Karl Podcast?

These podcasts share a similar audience with Dr Karl Podcast:

1. Shirtloads of Science
2. The Science Show
3. What's That Rash?
4. Science Friction
5. What The Duck?!

How many episodes of Dr Karl Podcast are there?

Dr Karl Podcast launched 21 years ago and published 681 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

How do I contact Dr Karl Podcast?

Our systems regularly scour the web to find email addresses and social media links for this podcast. We scanned the web and collated all of the contact information that we could find in our podcast database. But in the unlikely event that you can't find what you're looking for, our concierge service lets you request our research team to source better contacts for you.

Where can I see ratings and reviews for Dr Karl Podcast?

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What guests have appeared on Dr Karl Podcast?

Recent guests on Dr Karl Podcast include:

1. Dr Theresa Larkin
2. Geraint Lewis
3. Caitlin Thurnett
4. Zoe Kean
5. Jaxon Liebeck
6. Dr Laura Driessen
7. Zoe Kean OAM
8. Dr. Zoe Kean

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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