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PODCAST

Shirtloads of Science

Dr Karl Kruszelnicki

Dr Karl"s a curious optimist – a great combination for a science lover. Join him and his guests for weird facts, amazing conversation and remember, it"s never too late for a happy childhood. https://drkarl.com/

science physics

All Episodes

26:49

Have I been Pwned? With Troy Hunt (438)

Shirtloads of Science ·

2025/08/10

In this episode, we’re joined by Troy Hunt, Australian online security consultant, creator of Have I Been Pwned, and one of the world’s leading voices on data breaches. He breaks down the key differences between encryption and hashing, and what they mean for keeping your data safe. We dive into infamous data breaches, including the Ashley Madison case, and explore the often hidden, long-term impacts these leaks can have on people’s lives. With online scams and breaches costing Australians over $3

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26:38

Climate After Net Zero with Prof. Sarah...

Shirtloads of Science ·

2025/08/02

In this episode, we sit down with Australian climate scientist Professor Sarah Perkins-Kirkpatrick to explore the story of climate science, how we first discovered the planet was warming, and what we now know about the forces driving it. Sarah breaks down the role of carbon dioxide in trapping heat like a planetary blanket and shares insights from her cutting-edge research on long-term climate modelling. What would happen if we stopped emitting CO₂ today? The answers are sobering, yet they also

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26:11

A Conversation with Nobel Laureate Dr. Donna...

Shirtloads of Science ·

2025/07/26

I had the honor of sitting down with Dr. Donna Strickland, Nobel Prize-winning physicist and only the third woman in history to receive the prestigious award in physics. In our conversation, we discuss her groundbreaking work in laser physics and the journey that led her there. From her early academic interests to the moment she received the life-changing call from the Royal Swedish Academcy at 5AM (?!), Donna shares insights into her discovery of chirped pulse amplification (CPA), a revolutionary

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24:54

Part 2 with Prof. Carolyn Hogg (442)

Shirtloads of Science ·

2025/07/08

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25:44

Wikipedia Part Two with Dr. Heather Ford

Shirtloads of Science ·

2025/07/05

In part two of our chat with Dr. Heather Ford, we delve deeper into the hidden dynamics of Wikipedia — the world’s largest encyclopedia and 8th most visited website, run largely by volunteers. We explore how pages are updated in real time, yet controversial topics like Indigenous place names often face delays and heated edit wars. Dr. Ford explains how this can lead editors to walk away, raising concerns about who gets to shape history. We also unpack the platform's lack of diversity and the growing

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18:45

Wikipedia: The Power and the Pitfalls Part One with...

Shirtloads of Science ·

2025/06/28

I'm joined by Dr. Heather Ford, ARC Future Fellow and Professor in the School of Communications at UTS, to explore the fascinating world of Wikipedia. Inspired by her article “We analysed 35,000 Wikipedia entries about Australian places. Some of them sanitise history” in The Conversation, we dive deep into the strengths and shortcomings of one of the internet’s most beloved resources. We unpack how Wikipedia works behind the scenes: who edits it, how “edit wars” break out, and why it remains such a

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15:28

Hypersonics Part Two with Dr. Graham Wild (433)

Shirtloads of Science ·

2025/06/21

In part two of my conversation with Dr. Graham Wild, we dive deeper into the fascinating world of hypersonic machines. We explore how sound waves behave at extreme speeds, the significance of the boundary layer, and what materials are best suited for these ultra-fast aircraft. Connect with Dr. Graham Wild on LinkedIn Twitter/X: @AerospaceDoctor

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18:06

Hypersonics Part One with Dr. Graham Wild (432)

Shirtloads of Science ·

2025/06/14

Aviation expert Dr. Graham Wild returns to take us beyond the basics of flight and into the high-speed world of subsonic vs. hypersonic aircraft. We break down the engine mechanics behind these incredible machines, and I squeeze in a humblebrag about sitting in an SR-71 (yes, okay, it was grounded). It’s a theory-packed episode, so we’ve split it into two parts. Catch Part 2 next week. Connect with Dr. Graham Wild on Linkedin Twitter/ X - @aerospacedoctor

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34:07

How Planes Fly (A Brief Introduction) with Dr. Graham...

Shirtloads of Science ·

2025/06/07

In 2020, Scientific American made waves with the provocative headline: "No One Can Explain Why Planes Stay in the Air." But is that really true? Dr. Graham Wild, senior lecturer in aviation science and technology at the University of New South Wales in Canberra, joins us to set the record straight. In this episode, we dip our toes into the complex world of flight. We scratch at the very surface of the topic in an episode that could easily take over 20 hours. Connect with Dr. Graham Wild on Linkedin

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21:44

Rethinking Laundry for the Planet With Dr Holly Kaye...

Shirtloads of Science ·

2025/05/31

Most of us throw our clothes in the wash without a second thought, but what if that habit is doing more harm than good? In this episode, Dr. Holly Kaye-Smith, social change expert and communications specialist, challenges the way we think about cleanliness, climate action, and everyday laundry. From surprising stats (over 90% of washed clothes aren’t even dirty!) to the hidden environmental cost of every wash cycle, we dive into the myths, microplastics, and mindsets that shape our laundering

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31:56

Are Ice Baths Worth the Hype? With Dr Hunter Bennett...

Shirtloads of Science ·

2025/05/24

Are ice baths really the recovery miracle they're made out to be? We plunge into the science with Dr. Hunter Bennett, lecturer at the University of South Australia, exploring the pros and cons of ice baths, when they’re helpful, and when they might actually hinder your gains. We also unpack health misinformation online and Dr Hunter shares five evidence-based tips for anyone curious about cold plunges. Connect with Dr Hunter Bennett on Linkedin Dr Bennett's article on Ice Baths in The Conversation

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24:33

Health Misinformation on Social Media & Overdiagnosis...

Shirtloads of Science ·

2025/05/19

Dr. Brooke Nickel dives into the murky world of health misinformation on social media, exposing how overdiagnosis and unverified health claims are thriving in a mostly unregulated space. We explore the influence of online personalities, the power of personal anecdotes, and the urgent need for evidence-based guidance in digital health conversations. 🔗 Connect with Dr. Brooke Nickel on LinkedIn

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24:33

Health Misinformation on Social Media & Overdiagnosis...

Shirtloads of Science ·

2025/05/17

Dr. Brooke Nickel dives into the murky world of health misinformation on social media, exposing how overdiagnosis and unverified health claims are thriving in a mostly unregulated space. We explore the influence of online personalities, the power of personal anecdotes, and the urgent need for evidence-based guidance in digital health conversations. 🔗 Connect with Dr. Brooke Nickel on LinkedIn

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27:11

The Dark Side of the U.S Meat Packing Industry with...

Shirtloads of Science ·

2025/05/10

Award-winning author and investigative journalist Alice Driver joins me to discuss her powerful new book, Life and Death of the American Worker. Her investigation exposes the deeply unethical practices within the meatpacking industry in the United States. For Alice, this story is personal. She grew up in Arkansas, one of the country’s poorest states and home to Tyson Foods, the largest meatpacking plant in America. We delve into the harsh realities faced by the industry’s workforce, many of whom are

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28:14

Space Lasers on the Toliman Mission with Prof. Peter...

Shirtloads of Science ·

2025/05/03

In this episode, Prof. Boris Kuhlmey and Prof. Peter Tuthill join me to discuss the Toliman Mission, a space telescope project focused on detecting Earth-like exoplanets around Alpha Centauri, our nearest star system, using precise astrometric measurements. We discuss logistics, the costs involved and the success rate of such an astronomical project. Developed by a collaboration including the University of Sydney, NASA’s JPL, and Breakthrough Initiatives, it aims to launch by 2026. University of

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33:09

Fluoride in Drinking Water with Dr Michael Foley (425)

Shirtloads of Science ·

2025/04/26

Almost all of the regional and remote communities in Queensland do not have fluoridated drinking water, so why is this a problem? Dentist Dr Michael Foley debunks the infamous NTP report which suggested that fluoridated drinking water lowered IQ and breaks down how fluoride actually works and why it's so important for our dental health.

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16:34

Seaforesting Carbon with Sam Elson (424)

Shirtloads of Science ·

2025/03/30

Atmospheric Carbon is burning us up. CO2 is the big culprit but what about methane ? Industry calls CH4 "natural gas" but sheep and cattle belch millions of tons. Australian scientists have a very cool answer with seaweed. drkarl.com seaforest.com.au

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29:14

Food Noise with Professor Clare Collins (423)

Shirtloads of Science ·

2025/03/23

Weight loss medicines are never easy. What happens when your brain says you're full? Dr Karl and Professor Clare Collins explore the promises and pitfalls plus the ones that occasionally kill. drkarl.com

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19:26

Keeping Cool ep2 with Professor Jay (422)

Shirtloads of Science ·

2025/03/16

Our warming world means more humidity. You can't see it but you can feel it. Professor Ollie Jay introduces Dr Karl to wet bulb thermometers, how sweating works and why humidity gets you down. DrKarl.com Prof Ollie Jay

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19:03

Keeping Cool ep1 with Prof Jay (421)

Shirtloads of Science ·

2025/03/09

Summer heat waves are increasing - so AC or fan what is best ? The answer becomes unclear when air temperatures are in the high 30s. Pressor Jay takes Dr Karl inside your sweat glands to discover the physics of keeping cool. DrKarl.com Prof Ollie Jay

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447 results

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