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PODCAST

Shirtloads of Science

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 Contact: shirtloadspodcast@gmail.com

science physics

All Episodes

24:52

Reality Check: An Astrophysicist's View of Reality...

Shirtloads of Science ·

2026/08/22

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

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33:18

More with Toby Hagon: The EV Deep Dive Continues (487)

Shirtloads of Science ·

2026/08/15

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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27:19

Charged Up: All Things Electric Vehicles With Toby...

Shirtloads of Science ·

2026/08/08

Motor journalist Toby Hagon joins Shirtloads of Science to talk all things electric vehicles. We break down the often-confused difference between kilowatts and kilowatt-hours, compare EVs against petrol cars on performance, energy use, and cost, and explore everything from single to quad-motor setups. Toby unpacks AC vs DC charging and battery basics, looks at how servicing costs stack up, and separates real EV fire statistics from the hype. This was a big one, so we split it in two - catch part two

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33:37

Growing Mini Retinas To Fight Blindness With Assoc....

Shirtloads of Science ·

2026/08/01

Associate Professor Anai González Cordero joins us on Shirtloads to explore the remarkable world of stem cells and how they can develop into almost any cell in the human body! She explains how her team is using stem cell technology to better understand and develop potential treatments for inherited retinal diseases, including Stargardt disease and Usher syndrome. We also discuss her work at the Children's Medical Research Institute and the importance of supporting genetic research through Jeans for

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27:59

Beyond "Survival of the Fittest" with Rowan Hooper (484)

Shirtloads of Science ·

2026/07/25

What if evolution isn't just about the survival of the fittest? Rowan Hooper, senior editor at New Scientist, joins Shirtloads to discuss his new book Togetherness - a challenge to the idea that nature is defined purely by competition. From the fig and wasp's ancient partnership to the mycorrhizal fungal networks threading through forest soils, Hooper makes a compelling case that relationships and symbiosis are overlooked fundamental aspects of evolution.

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32:41

In Dedication: Richard Scolyer on Risk, Hope and...

Shirtloads of Science ·

2026/07/18

This conversation was originally recorded and published in November, 2024. In light of Richard's passing, we wanted to share it again because his insights remain as inspiring and relevant as ever. We extend our deepest condolences to his family, friends and colleagues.

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31:52

Beasts Behaving Badly with Dr. Ann Jones (482)

Shirtloads of Science ·

2026/07/11

Dr. Ann Jones joins me to chat about her hilarious new What the Duck? series, Nature's Most Wanted, which dives into the wild world of criminal animals. We investigate some of nature's strangest case files… a duck caught speeding (twice), drug-addicted parrots, an underwear-nicking cat, drunk elephants, and heavyweight hamsters! A funny look at the surprising ways animals collide with the human rules we've created. What The Duck?! Nature's Most Wanted

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25:48

Seaweed! The Humble Organism Fighting Climate Change...

Shirtloads of Science ·

2026/07/04

Marine Ecologist Assoc. Professor Alex Campbell takes us into the wonderful, under-appreciated world of seaweed and makes the case that it might be one of our most powerful allies against climate change! We dive into seaweed's evolutionary history and the troubling decline now underway: as ocean temperatures rise, marine organisms are shifting toward the poles at a rate of over 60km per decade to escape the heat, with Tasmania's once-thriving giant kelp forests shrinking by a staggering 90% since

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24:07

Why Weight Loss Drugs Don't Work On Their Own Dr....

Shirtloads of Science ·

2026/06/27

I'm joined by Dr Nick Fuller to dissect the long-term effectiveness of weight loss medications and why lasting results do actually require more than medication alone. Nick explains why evidence-based behavioural weight management programs remain the first-line approach to weight loss built on three key pillars: diet, exercise and sleep (did you even know that sleep plays a big role in regulating hunger hormones?!) Drawing on his team's research, Nick shares why many people regain weight after

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34:04

Inside Microsoft's Global Research Lab With Dr. Peter...

Shirtloads of Science ·

2026/06/20

This episode I'm joined by Dr Peter Lee, Head of Research at Microsoft, to explore the ideas shaping the future of technology. Leading 14 research laboratories globally and overseeing a research and development program that receives more than 10% of Microsoft's overall budget, Dr Lee shares his journey to the top of one of the world's largest innovation engines. From AI tools transforming early cancer detection and predicting protein structures in hours (instead of years!), to discovering new

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28:14

The (Not So) Boring Billion with Prof. Dietmar Müller...

Shirtloads of Science ·

2026/06/13

In this episode, we speak with Dietmar Müller about the "Boring Billion", a seemingly quiet period in Earth's deep history that may have been crucial for the evolution of complex life. Drawing on his latest research, Müller explains how plate tectonics, passive continental margins, and volcanic outgassing shaped Earth's slow carbon cycle and gradually oxygenated the oceans during the mid-Proterozoic era. Müller also reflects on how young the science of plate tectonics really is, and discusses the

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29:52

Solving a Cosmic Radio Signal Mystery with Kovi Rose

Shirtloads of Science ·

2026/06/06

Astronomer and soon-to-be Dr. Kovi Rose joins us to discuss his newly published Nature Astronomy paper on one of the universe's newest mysteries: strange repeating flashes of radio waves and X-rays coming form deep within our galaxy! His team's discovery of ASKAP J174 has helped identify the source as a pair of stars orbiting each other, with a white dwarf pulling or accreting material from its companion. This discovery could help unlock the origins of mysterious signals flashing across the sky,

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17:51

Coffee & Blood Pressure Explained with Prof. Clare...

Shirtloads of Science ·

2026/05/30

Professor Clare Collins returns to the pod to answer a common question: does coffee raise your blood pressure? We also discuss how genetics influence whether you're a fast or slow caffeine metaboliser, the beneficial phytonutrients found in coffee, why decaf still has health benefits, and when people with high blood pressure may need to be more cautious with their intake. nomoneynotime.com.au

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30:44

The Hidden Health Benefits of Honey with Prof. Clare...

Shirtloads of Science ·

2026/05/23

Friend of the pod Professor Clare Collins returns to dive down into the sticky depths of the surprisingly powerful world of honey - far beyond being "just a sugary liquid". From the hallucinogenic "mad honey" of the Rhododendrons to the science behind medical-grade honey dressings that can heal wounds days faster than conventional treatments, Dr. Clare explains why this ancient food deserves a second look. We dive into honey's beneficial micronutrients, anti-inflammatory properties, and why the

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28:12

The Hunt for Dark Matter with Dr. Theresa Fruth (474)

Shirtloads of Science ·

2026/05/16

What is the universe actually made of? Particle physicist Theresa Fruth join us at Shirtloads to explore one of science's greatest unsolved mysteries - dark matter! Making up roughly 85% of the universe, yet appearing in none of our known particles, dark matter is invisible, elusive and almost certainly the reason the universe (and us!) exist at all. Theresa and her team are hunting for it anyway. Working 1.2 kilometres underground in a converted gold mine in regional Victoria, they're searching for

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32:40

The Human Cost of One Degree with Prof. Ollie Jay

Shirtloads of Science ·

2026/05/09

Professor Ollie Jay, a leading expert in heat and health, returns to Shirtloads to discuss the growing toll of climate change on human wellbeing and global economics. Insights drawn from the latest Lancet Countdown report show that over half a million people die from heat-related causes each year, and a million more from fossil fuel pollution - deaths that are largely preventable. Rising temperatures are quietly reshaping our daily lives, from reducing physical and cognitive productivity, to

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31:04

Incidental Exercise with Prof. Emmanuel Stamatakis (472)

Shirtloads of Science ·

2026/05/03

In this episode, we speak with Professor Emmanuel Stamatakis about Vigorous Intermittent Lifestyle Physical Activity (VILPA) - short bursts of high-intensity movement built into everyday life, like walking briskly or carrying groceries. With only a quarter of adults exercising regularly, his research highlights how incidental activity, when done with enough intensity, can offer meaningful health benefits. We discuss how VILPA is grounded in observational research and the idea of "exercise snacks"

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33:08

Dumb Stuff In Space with Assoc. Prof. Michael Brown...

Shirtloads of Science ·

2026/04/25

We're living through the great Space Boom and with great innovation comes a lot of whacky ideas... Astronomer and Associate Professor Michael Brown from Monash Univeristy joins me to discuss stupid things in space. The conversation dives into some of the more bizarre and ambitious ideas circulating the space industry, from firing villians and radioactive waste in to the sun to deploying giant orbital mirrors to light up Earth's dark side. Brown breaks down why many of these concepts are far less

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31:07

Using Soundwaves To Measure The Sun with Prof. Conny...

Shirtloads of Science ·

2026/04/18

In this episode I sit down with Professor Conny Aerts, a pioneering mathematician and founding figure of astroseismology, who reveals how scientists are "listenting" to stars to understand what's happening deep inside them. From oscillating stars to solar sunquakes, she explains how sound waves can measure the sun's size, age and activity. Beyond the science, she shares her remarkable journey from a small rural town in Belgium where she had to attend an all-boys school, the only school near her

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30:34

How To Die in the 21st Century with Dr. Hannah Gould...

Shirtloads of Science ·

2026/04/11

We're scared to say the D word! But why is talking about death such a taboo? Dr. Hannah Gould, a cultural anthropologist at the University of Melbourne, joins me to discuss the topic in the wake of the release of her new book 'How To Die in the 21st Century'. The discussion dives in to the modern experience of dying, from the pressures of having a 'good death' to the reality of overly medicalised, 'prolonged dwindling'. Hannah unpacks how death isn't just biological but also cultural and legal,

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