Onionlike Layers of Exploding Stars with Prof. Geraint Lewis (447)

My go-to guy for all cosmic things Prof. Geraint Lewis, astrophysicist at the University of Sydney, returns to unpack a fascinating New York Times art...

The Aftermath of Cosmic Collisions with Prof. Geriant Lewis (446)

In this episode, friend of the show Geriant Lewis, Professor of Astrophysics at the Sydney Institute for Astronomy within the University of Sydney, jo...

The Human Side of Misinformation Part 2 with Assoc. Prof. Marian-Andrei Rizoiu (445)

In part two, Associate Professor Marian-Andrei Rizoiu from the University of Technology Sydney explains how misinformation and toxic online cultures s...

The Human Side of Misinformation Part 1 with Assoc. Prof. Marian-Andrei Rizoiu (444)

In this episode, I sit down with Marian-Andrei Rizoiu, Associate Professor and head of the Behavioral Data Science Lab at the University of Technology...

Science Under Siege with Prof. Michael Mann & Prof. Peter Hotez (443)

In this episode, we sit down with two of today’s most prominent defenders of science: Professor Michael Mann, world-renowned climate scientist, and Pr...

From DNA to Policy: Protecting Threatened Species with Prof. Carolyn Hogg (442)

In part two of our conversation with Professor Carolyn Hogg, Research Manager of the Australasian Wildlife Genomics Group at the University of Sydney,...

Whales, Wildlife, and Conserving Threatened Species with Prof. Carolyn Hogg (441)

From collecting urine samples in Antarctica to sampling whale snot to study reproduction, Dr. Carolyn Hogg's career is anything but ordinary. In this...

Lightning, Fertiliser, and the Future of Green Nitrogen with Professor PJ Cullen (440)

In this episode, Professor PJ Cullen, Chemical Engineering expert from the University of Sydney, breaks down the global nitrogen challenge. We explore...

Staying Safe Online Part 2 with Troy Hunt (439)

In part two with Online Safety Consultant Troy Hunt (Have I Been Pwned), we unpack the risks of online age verification in light of Australia’s social...

Have I been Pwned? With Troy Hunt (438)

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...

Climate After Net Zero with Prof. Sarah Perkins-Kirkpatrick (437)

In this episode, we sit down with Australian climate scientist Professor Sarah Perkins-Kirkpatrick to explore the story of climate science, how we fir...

A Conversation with Nobel Laureate Professor Donna Strickland (436)

I had the honor of sitting down with Professor Donna Strickland, Nobel Prize-winning physicist the third woman in history to receive the prestigious a...

Part 2 with Prof. Carolyn Hogg (442)

Wikipedia Part Two with Dr. Heather Ford (435)

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 v...

Wikipedia: The Power and the Pitfalls Part One with Dr. Heather Ford (434)

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....

Hypersonics Part Two with Dr. Graham Wild (433)

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 beha...

Hypersonics Part One with Dr. Graham Wild (432)

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 b...

How Planes Fly (A Brief Introduction) with Dr. Graham Wild (431)

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. G...

Rethinking Laundry for the Planet With Dr Holly Kaye Smith (430)

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 Kay...

Are Ice Baths Worth the Hype? With Dr Hunter Bennett (429)

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 So...

Health Misinformation on Social Media & Overdiagnosis with Dr Brooke Nickel (428)

Dr. Brooke Nickel dives into the murky world of health misinformation on social media, exposing how overdiagnosis and unverified health claims are thr...

The Dark Side of the U.S Meat Packing Industry with Alice Driver (427)

Award-winning author and investigative journalist Alice Driver joins me to discuss her powerful new book, Life and Death of the American Worker. Her i...

Space Lasers on the Toliman Mission with Prof. Peter Tuthill and Prof. Boris Kuhlmey (426)

In this episode, Prof. Boris Kuhlmey and Prof. Peter Tuthill join me to discuss the Toliman Mission, a space telescope project focused on detecting Ea...

Fluoride in Drinking Water with Dr Michael Foley (425)

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 F...

RPT Growing Ear Drums with Professor Marcus Atlas

Dr Karl uncovers a lifelong Australian quest to restore comfort and hearing with custom made eardrum transplants. Called Cleardrums, Professor Marcus...

RPT Eating for Beginners with Dr Fuller

Dr Karl (former father of the year) talks with Dr Nick Fuller (recent dad) about teaching children how to eat. The good habits learned early lead to h...

RPT Ballooning for Dark Matter with Dr Sirks

Why use a balloon to hunt the most elusive suff in the Universe? Dr Sirks takes Dr Karl through the history of Dark Matter and why astronomy is only p...

Seaforesting Carbon with Sam Elsom (424)

Atmospheric Carbon is burning us up. CO₂ is the big culprit but what about methane? Industry calls it "natural gas" but sheep and cattle belch million...

Food Noise with Professor Clare Collins (423)

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 pitf...

Keeping Cool ep2 with Professor Jay (422)

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 sw...

Keeping Cool ep1 with Prof Jay (421)

Summer heat waves are increasing - so AC or fan, what is best? The answer becomes unclear when air temperatures are in the high 30s. Professor Jay tak...

The Crack with Marcus Chown (408)

Author and astrophysicist Marcus Chown is a great explainer. A British stargazer, he studied under Richard Feynman in California. Dr Karl puts him to...

G-Planes and Hoops with Dr Bloom (420)

Physics on both galactic and personal scales are explored and answered with Dr Jessica Bloom and Dr Karl.
drkarl.com
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Meet the Novas with Dr Sara Webb (419)

We are so lucky to be alive. Dr Sara Webb's 'The Little book of Cosmic Catastrophes' looks at dangerous galactic neighbours. So what are the chances o...

Circular economies with Belinda Chellingworth (418)

Dr Karl consults with circular economy expert, experienced waste manager, change maker and garbologist Belinda Chellingworth.

Waste is...

Sexy Talk with Dr Ann Jones (417)

A shameless piece of cross promotion for ABC podcast 'What the Duck' with Dr Ann Jones about plant and animal reproduction. Contains names of body par...

Slick Oil with Royce Kurmelovs (416)

Global Warming is caused by burning fossil fuels.  "Slick: Australia's Toxic Relationship With Big Oil " is journalist Royce Kurmelovs' account of our...

News from Mars with Dr Brown (415)

Dr Karl talks with the Australian working on the surface of Mars, Dr Adrian Brown from NASA. Hear how AI saved "Percy" the Rover, what those leopard-s...

Winning the Science debate with Dr Bertley (414)

Dr Frederic Bertley is a leading educator, President and CEO of the Center for Science and Industry (COSI), one of America’s top-ranked science museum...

Hypnotherapy with Dr Spiegel (413)

Feelings live in our brain. Some are painful like anxiety and addiction and can ruin lives. So why aren't hypnotherapy treatments more widely used? Dr...