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Shirtloads of Science: Daily Summaries Delivered
by Dr Karl Kruszelnicki
Dr Karl's a curious optimist. Join him as he explores the latest developments in science with leading researchers and communicators. And remember, it's never too late for a happy childhood. Series Producer: Isabelle Benton Technical Producer: Maya Cook
Latest Episodes
The most recent episodes — sign up to get AI-powered summaries of each one.
- 3 weeks ago26 min
Inside Apollo Mission Control With Gerry Griffin (493)
This week we're joined by Gerry Griffin, an aeronautical engineer and Apollo flight director who worked on every single moon landing during the Apollo mission, from Apollo 11 to Apollo 17. In this chat, he shares how the Mission Control team worked to manage each mission, second by second, in rotating shifts. With far more data on the ground than on board, Mission Control was better positioned to help the astronauts solve problems as they arose. Gerry walks through some of the "showstopper" moments that could have ended in disaster, including the lightning strike on Apollo 12 and the 1202 alarm during the Apollo 11 landing. He also talks about Apollo 13, where an oxygen tank failure led to the famous call, "Houston, we've had a problem." Gerry's firsthand experience of that mission led to his role as an advisor on the film Apollo 13. Gerry is coming to Australia next year for a series of events called SPACELIVE. Visit the website for more details https://www.spaceliveofficial.com/
- Oct 3, 202628 min
The GLP-1 Side Effect Everyone Ignores With Professor Clare Collins (493)
When Robbie Williams announced he had been diagnosed with scurvy earlier this year, Professor Clare Collins was relieved… why?! Because he was bringing attention to a major issue arising from the use of the popular class of weight loss medications, GLP-1s. Professor Collins joins me on Shirtloads to discuss how nutrient deficiencies have increased among those using these medications. Clare agrees that GLP-1 medications DO have an overall net positive effect as effective and beneficial medications, but warns that without proper nutrient intake (due to a suppression in appetite) nutrient deficiencies are much more common than they should be. This is an aspect of the GLP-1 discourse that does not get enough attention - particularly when discussing adverse side effects. Visit No Money, No Time to read the article www.nomoneynotime.com.au/
- Sep 19, 202626 min
OpenAI's Rogue AI: A Real-World Cyberattack Explained with Dr. Petr Levedev (492)
In mid-2026, a swarm of AI agents coordinated a cyberattack on Hugging Face, a platform where machine learning communities can collectively work to improve AI models and capabilities. This breach happened without human supervision. Friend of the show and science communicator Dr. Petr Lebedev brings us up to speed on what is now being referred to as the first true AI safety incident. A crucial conversation on why the AI race needs to hit the brakes so regulations can be implemented to reduce the risk of AI misalignment. This conversations was recorded in late August, 2026. Subscribe to SciencePetr on Youtube - www.youtube.com/@SciencePetr Petr's conversation with Yoshua Benjo - www.youtube.com/watch?v=fvvvtbBvh6Q https://sciencepetr.com/
- Sep 12, 20269 min
The Universe's Mathematical Twin With Marcus Chown [Bonus Episode] (491)
Science writer and journalist Marcus Chown returns for a shorter, more philosophical chat. When Einstein first proposed gravitational waves, atoms hadn't even been discovered, so who knows what the next century holds? We dig into the strange idea of the universe's "mathematical twin," and discuss the Standard Model of physics - a brilliant framework, but riddled with holes. www.marcuschown.com
- Sep 5, 202631 min
Gravity's Missing Particle With Marcus Chown (490)
Science writer and former astrophysicist Marcus Chown joins us to discuss the elusive graviton - the theoretical particle behind gravity. In this chat we dig into the four fundamental forces of nature, why gravity is so uniquely hard to pin down, and why detecting a graviton would require a detector larger than Jupiter. Marcus also unpacks string theory, the only framework that manages to fold gravity in with the other forces, and why it's fallen out of favour with much of the physics community. www.marcuschown.com/
- Aug 29, 202628 min
Reality Q&A: Live from Willoughby Library with Geraint Lewis (489)
A bonus episode straight from the audience at Geraint Lewis' book launch for "The Shortest History of Reality." Listeners fire off some big questions: where do we sit with the 95% of the universe we can't explain? What is dark energy? Why does time feel so different experientially? Along with other questions concerning the Theory of Everything, whether light really has a speed, what happens to our mass when we die, consciousness and the Twin paradox!
- Aug 22, 202624 min
Reality Check: An Astrophysicist's View of Reality with Geraint Lewis Part One (488)
Join us for a special live episode of Shirtloads of Science, recorded at Willoughby Library for the launch of Professor Geraint Lewis' new book, "The Shortest History of Reality" - a compelling journey tracing the evolution of humanity's understanding of reality. In this live session, Geraint touches on a number of deep and puzzling concepts concerning reality (according to an astrophysicist) - from the baffling fact that 95% of the universe remains a mystery, to the clash between relativity and quantum mechanics, space and time, dark matter and dark energy, the mind-bending one-electron theory, and the ever-elusive Theory of Everything. https://www.geraintflewis.com/
- Aug 15, 202633 min
More with Toby Hagon: The EV Deep Dive Continues (487)
Motor journalist Toby Hagon returns to Shirtloads of Science for round two on electric vehicles. Toby shares how he got into motoring journalism and what the job really involves. We break down 400V vs 800V batteries, charge cycles, and the reality of battery degradation, decode WLTP vs NEDC ratings, and marvel at just how powerful EVs really are. evcentral.com.au outbacktravelaustralia.com.au evcentral.com.au outbacktravelaustralia.com.au
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About Shirtloads of Science
Dr Karl's a curious optimist. Join him as he explores the latest developments in science with leading researchers and communicators. And remember, it's never too late for a happy childhood. Series Producer: Isabelle Benton Technical Producer: Maya Cook
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