Meet a scientist working to build and test a fusion power plant. Fusion Professor Howard Wilson has intimate knowledge of plasma - the stuff inside stars - and what is needed to safely contain it on earth.   Prof. Wilson *Science Week Announcement!* See 'Dr Karl and Friends' live at the Sydney Town Hall. Thurs 17 August at 6:30pm. Free registration at drkarl.com

Meet a scientist working to build and test a fusion power plant. Fusion Professor Howard Wilson has intimate knowledge of plasma - the stuff inside stars - and what is needed to safely contain it on earth.  <a href="https://www.york.ac.uk/physics-engineering-technology/people/wilson/" rel="nofollow" target="_blank"> Prof. Wilson</a> *Science Week Announcement!* See 'Dr Karl and Friends' live at the Sydney Town Hall. Thurs 17 August at 6:30pm. Free registration at <a href="https://drkarl.com" rel="nofollow" target="_blank">drkarl.com</a>

Fusion Power with Professor Wilson (349)

PhD student Kirsten Banks takes Dr Karl on a deep journey towards a new candle standard. Stellar seismology and the search for exoplanets may make galactic maps more accurate. @Astrokirsten *Science Week Announcement!* See 'Dr Karl and Friends' live at the Sydney Town Hall. Thurs 17 August at 6:30pm. Free registration at drkarl.com

PhD student Kirsten Banks takes Dr Karl on a deep journey towards a new candle standard. Stellar seismology and the search for exoplanets may make galactic maps more accurate. <a href="https://twitter.com/@astrokirsten" rel="nofollow" target="_blank">@Astrokirsten</a> *Science Week Announcement!* See 'Dr Karl and Friends' live at the Sydney Town Hall. Thurs 17 August at 6:30pm. Free registration at <a href="https://drkarl.com" rel="nofollow" target="_blank">drkarl.com</a>

Star Shine with Kirsten Banks (348)

Gene therapies are being approved for a growing number of conditions. Professor Alexander talks to Dr Karl about how they work and the decades of testing to make them safe.  Prof. Ian Alexander Dr. Karl

Gene therapies are being approved for a growing number of conditions. Professor Alexander talks to Dr Karl about how they work and the decades of testing to make them safe. <a href="https://www.sydney.edu.au/medicine-health/about/our-people/academic-staff/ian-alexander.html" rel="nofollow" target="_blank"> Prof. Ian Alexander</a> <a href="https://drkarl.com" rel="nofollow" target="_blank">Dr. Karl</a>

Gene Therapies with Professor Alexander (348)

Nature needs our help to beat global warming. Dr Karl consults Prof D'Alessandro about her team's work to pull carbon out of the air using solar power.  Professor D'Alessandro Dr Karl

Nature needs our help to beat global warming. Dr Karl consults Prof D'Alessandro about her team's work to pull carbon out of the air using solar power. <a href="https://www.sydney.edu.au/science/about/our-people/academic-staff/deanna-dalessandro.html" rel="nofollow" target="_blank"> Professor D'Alessandro</a> <a href="https://drkarl.com" rel="nofollow" target="_blank">Dr Karl</a>

Net Zero with Aussie Research (347)

Around 20 years ago a worldwide hormone scare took hold. Was it a media beat-up?  Dr Natasha Vavrek takes Dr Karl through the experiment that caused it and numbers that were misreported. Today HRT is called MHT and is safe again. thebubbletasmania DrKarl

Around 20 years ago a worldwide hormone scare took hold. Was it a media beat-up?  Dr Natasha Vavrek takes Dr Karl through the experiment that caused it and numbers that were misreported. Today HRT is called MHT and is safe again. <a href="https://www.thebubbletasmania.com.au/" rel="nofollow" target="_blank">thebubbletasmania</a> <a href="https://drkarl.com" rel="nofollow" target="_blank">DrKarl</a>

Hormones with Dr Vavrek (345)

Australia has implemented laws to permit the use of some psychedelic drugs in strictly controlled circumstances. Psychedelics researcher Dr Paul Liknaitsky and acclaimed author Heather Rose discuss the possibilities and complexities. #shirtloadsofscience This podcast will discuss topics of mental health. If you find parts of this content confronting or distressing contact Lifeline on 131114.    Heather Rose Dr Paul Liknaitzky

Australia has implemented laws to permit the use of some psychedelic drugs in strictly controlled circumstances. Psychedelics researcher Dr Paul Liknaitsky and acclaimed author Heather Rose discuss the possibilities and complexities. #shirtloadsofscience This podcast will discuss topics of mental health. If you find parts of this content confronting or distressing contact Lifeline on 131114.    <a href="https://heatherrose.com.au/" rel="nofollow" target="_blank">Heather Rose</a> <a href="https://research.monash.edu/en/persons/paul-liknaitzky" rel="nofollow" target="_blank">Dr Paul Liknaitzky</a>

Psychedelics and Therapy (344)

Neil deGrasse Tyson

Astrophysicist, author, and speaker Neil deGrasse Tyson joins Dr Karl to talk about science communication. Today needs global action based on solid science like never before - so how to frame it ?   July 23 NZ-Au-Sg Tour dates Drkarl.com

Astrophysicist, author, and speaker Neil deGrasse Tyson joins Dr Karl to talk about science communication. Today needs global action based on solid science like never before - so how to frame it ?   <a href="https://thinkinc.org.au/pages/neil-degrasse-tyson-2023" rel="nofollow" target="_blank">July 23 NZ-Au-Sg Tour dates</a> <a href="https://drkarl.com" rel="nofollow" target="_blank">Drkarl.com</a>

Neil deGrasse Tyson (343)

Geoff Mutton

What is the best way to protect your skin? Dr Karl seeks ground truths from an industrial chemist. Is it all in the science of drying paint ? drkarl.com

What is the best way to protect your skin? Dr Karl seeks ground truths from an industrial chemist. Is it all in the science of drying paint ? <a href="https://drkarl.com" rel="nofollow" target="_blank">drkarl.com</a>

Sunscreen Science with Geoff Mutton (342)

Prof Collins

Healthy eating begins in the mouth.  How much should you chew food?   What sized bites are best? Can Dental Health affect your gut?  Dr Karl masticates these topics with Dietetics Professor Collins. drkarl.com 

Healthy eating begins in the mouth.  How much should you chew food?   What sized bites are best? Can Dental Health affect your gut?  Dr Karl masticates these topics with Dietetics Professor Collins. <a href="https://drkarl.com" rel="nofollow" target="_blank">drkarl.com</a>

Healthy chewing and eating with Prof Collins (341)

Wind-powered turbines are powerful machines. So why only three blades? Dr Rosemary gives Dr Karl an introduction to the engineering and physics of getting electricity from air currents. drkarl.com  

Wind-powered turbines are powerful machines. So why only three blades? Dr Rosemary gives Dr Karl an introduction to the engineering and physics of getting electricity from air currents. <a href="https://drkarl.com" rel="nofollow" target="_blank">drkarl.com  </a>

Wind Physics with Dr Rosemary  (340)

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/

Great, very interesting podcast. Keep up the terrific work, Dr. Karl.

Fantastic!

Listening in USA, love Dr Karl and the show is awesome

Love the show

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. <a href="https://drkarl.com/" rel="nofollow" target="_blank">https://drkarl.com/</a>

Shirtloads of Science

Linda Spilker

Dr Karl's Shirtloads takes you to where Water-Ice is rock, salty Geysers blow (just like earth's underwater Hydrothermic jets) and the prospects for life in our own Solar System are tantalisingly close. Dr Linda Spilker has been with NASA's Jet propulsion Lab since 1977. Her work spans Voyager missions and the current Cassini mission. With 40 years of exploration experience, enjoy our extended edition of Shirtloads. Also find out why you should put September 15th in your diary and how Australia may play a vital role in decoding Saturn's rings. (Warning: Contains Physics, Chemistry and traces of Biology).  

Dr Karl's Shirtloads takes you to where Water-Ice is rock, salty Geysers blow (just like earth's underwater Hydrothermic jets) and the prospects for life in our own Solar System are tantalisingly close. Dr Linda Spilker has been with NASA's Jet propulsion Lab since 1977. Her work spans Voyager missions and the current Cassini mission. With 40 years of exploration experience, enjoy our extended edition of Shirtloads. Also find out why you should put September 15th in your diary and how Australia may play a vital role in decoding Saturn's rings. (Warning: Contains Physics, Chemistry and traces of Biology).

Dr. Linda Spilker knows lots about Saturn (you'd swear she's been there). Well she has - virtually.

Claire Collins

Cholesterol is a waxy, fat-like substance that your body needs. When you have too much in your blood, it can build up on your artery walls. Too much cholesterol puts you at risk for heart disease and stroke, two leading causes of death. Prof. Claire Collins has 5 simple changes to your diet - that may improve your life and beat these notorious killers.

Cholesterol is a waxy, fat-like substance that your body needs. When you have too much in your blood, it can build up on your artery walls. Too much cholesterol puts you at risk for heart disease and stroke, two leading causes of death. Prof. Claire Collins has 5 simple changes to your diet - that may improve your life and beat these notorious killers.

Prof. Claire Collins - 5 Simple foods that might save your life

What careers open up for Physics graduates? What if you add a PhD in Chemistry? Meet Sydney University graduate Dr Michelle Deaker talking with Dr Karl about her journey. She started with some entrepreneurial spirit and then added an eye for opportunity. Dr Michelle turns research and ideas into products and then takes them to market. Her Australian venture capital portfolio includes a world-leading vaccine Nanopatch, a watch for tracking dementia patients and a new diagnostic in oncology.  Got a new idea for Dr Michelle ? one-ventures.com.au 

What careers open up for Physics graduates? What if you add a PhD in Chemistry? Meet Sydney University graduate Dr Michelle Deaker talking with Dr Karl about her journey. She started with some entrepreneurial spirit and then added an eye for opportunity. Dr Michelle turns research and ideas into products and then takes them to market. Her Australian venture capital portfolio includes a world-leading vaccine Nanopatch, a watch for tracking dementia patients and a new diagnostic in oncology.  Got a new idea for Dr Michelle ? <a href="http://www.one-ventures.com.au/" rel="nofollow" target="_blank">one-ventures.com.au</a>

Science Degrees - What are they Good For ?  

James Green

The stars at night are only a fraction of what we know should be there. So where are all those missing bits from our universe? This is a lifelong quest for Professor James Green from Colorado University in Boulder. Since his student days, he has been designing payloads for NASA rockets (and the Hubble space telescope) looking at invisible stuff. So how do you see in the cold black soup of space? What is a Sounding Rocket?  Why do Wimps beat Macho's ? These and many more questions are answered in Dr Karl's latest podcast. 

The stars at night are only a fraction of what we know should be there. So where are all those missing bits from our universe? This is a lifelong quest for Professor James Green from Colorado University in Boulder. Since his student days, he has been designing payloads for NASA rockets (and the Hubble space telescope) looking at invisible stuff. So how do you see in the cold black soup of space? What is a Sounding Rocket?  Why do Wimps beat Macho's ? These and many more questions are answered in Dr Karl's latest podcast.

The Dark Side of the Universe with Prof James Green (74)

To celebrate National Science Week in Australia, we all got together under the umbrella of the Sydney Science Festival to have a fun night called SquizCo – in other words, Science Plus Quiz = Comedy. We had two teams of top-notch scientists battling it out in an Arena of Knowledge and Wits under the watchful eye of host and fellow Sleek Geek Adam Spencer, with Dr Karl as the Brains Trust.

To celebrate National Science Week in Australia, we all got together under the umbrella of the Sydney Science Festival to have a fun night called SquizCo – in other words, Science Plus Quiz = Comedy. We had two teams of top-notch scientists battling it out in an Arena of Knowledge and Wits under the watchful eye of host and fellow Sleek Geek Adam Spencer, with Dr Karl as the Brains Trust.

Science + Quiz = Comedy National Science Week 2017 (43)

Doctor Alice on Interstellar Chemistry. Doctor Karl answers the vital question "Do Fish Drink?". Dr Almost Jessica on where it is best to listen to podcasts.  A Deep edition. The Shirtloads podcast Team back for 2018.

Doctor Alice on Interstellar Chemistry. Doctor Karl answers the vital question "Do Fish Drink?". Dr Almost Jessica on where it is best to listen to podcasts.  A Deep edition. The Shirtloads podcast Team back for 2018.

The Source of Life, Fish and podcasts (71)

Doctor Karl takes the Healthy Eating Quiz followed by a dietary checkup with Professor Claire Collins. Have you tried being Flexetarian ? 24 minutes of simple, healthy, free and inspiring suggestions. For maximum effect take the quiz before the podcast and compare your score with the Doctors.  healthyeatingquiz.com.au

Doctor Karl takes the Healthy Eating Quiz followed by a dietary checkup with Professor Claire Collins. Have you tried being Flexetarian ? 24 minutes of simple, healthy, free and inspiring suggestions. For maximum effect take the quiz before the podcast and compare your score with the Doctors.  <a href="http://healthyeatingquiz.com.au" rel="nofollow" target="_blank">healthyeatingquiz.com.au</a>

Balancing your Diet (70)

If every death was a good death, then euthenasia would be widespread. Today most countries ban it. Why? Professor Linda Shields has unearthed some of the reasons and they are within living memory. She is a Professor of Rural Health and has written of an under-reported genocide.  One-third of a million disabled people (adults and children, male and female, physical and intellectual)  were killed during the Nazi regime and the people who did that killing were nurses. Her book is Nurses and Midwives in Nazi Germany: The "Euthanasia Programs. 

If every death was a good death, then euthenasia would be widespread. Today most countries ban it. Why? Professor Linda Shields has unearthed some of the reasons and they are within living memory. She is a Professor of Rural Health and has written of an under-reported genocide.  One-third of a million disabled people (adults and children, male and female, physical and intellectual)  were killed during the Nazi regime and the people who did that killing were nurses. Her book is Nurses and Midwives in Nazi Germany: The "Euthanasia Programs.

Euthenasia - Our moral and ethical dilemma (66)

Natural Nukes - Dr Karl explains how the earth created a nuclear reactor billions of years before we figured out how. Extreme gravity, relativistic rotation speeds and could-have-been alien lighthouses - almost Dr Jessica explains the strange science of the Pulsar. Plus Dr Alice on things that shouldn't go boom - the Lithium-ion batteries that power all our devices.

Natural Nukes - Dr Karl explains how the earth created a nuclear reactor billions of years before we figured out how. Extreme gravity, relativistic rotation speeds and could-have-been alien lighthouses - almost Dr Jessica explains the strange science of the Pulsar. Plus Dr Alice on things that shouldn't go boom - the Lithium-ion batteries that power all our devices.

Natural Nukes, Pulsars and Lithium-ion Batteries

Geraint Lewis

Prof Geraint

Seventy-five percent can be described by Einstein. The remainder? It drove Albert to question his work till his dying day. Dr Karl and Dr Lewis discuss evidence for the missing theory .  http://www.physics.usyd.edu.au/~gfl/

Seventy-five percent can be described by Einstein. The remainder? It drove Albert to question his work till his dying day. Dr Karl and Dr Lewis discuss evidence for the missing theory .  <a href="http://www.physics.usyd.edu.au/~gfl/" rel="nofollow" target="_blank">http://www.physics.usyd.edu.au/~gfl/</a>

Einstein, Newton & Frame Dragging with Prof Geraint Lewis (179)

Brian Von Herzen

Imagine cooling down 2,300 km of Barrier Reef along the Australian coast using renewable energy. Mind-blowing, right? Dr Brian Von Herzen has such a plan. It's part of a bigger picture that he calls Marine Permaculture - using nature to restore habitat in the oceans. It is a project he has been working towards for over a decade including demonstrations off Hawaii.  Dr Karl discussed Dr Brian's vision in Queensland earlier this year. The audio quality varies as it was recorded on location.

Imagine cooling down 2,300 km of Barrier Reef along the Australian coast using renewable energy. Mind-blowing, right? Dr Brian Von Herzen has such a plan. It's part of a bigger picture that he calls Marine Permaculture - using nature to restore habitat in the oceans. It is a project he has been working towards for over a decade including demonstrations off Hawaii.  Dr Karl discussed Dr Brian's vision in Queensland earlier this year. The audio quality varies as it was recorded on location.

Marine Permaculture (Brian von Herzen) (29)

So you want to solve the Dark Energy conundrum ? Then you need to be patient. It'll be clumpy, relativistic and you'll be seeing double at times.  It will take you to Chile and Germany. Dr Karl explores Dr Lewis's quest for a universal holy grail.

So you want to solve the Dark Energy conundrum ? Then you need to be patient. It'll be clumpy, relativistic and you'll be seeing double at times.  It will take you to Chile and Germany. Dr Karl explores Dr Lewis's quest for a universal holy grail.

Dark Matter Quest (87)

Xiuhtezcatl Martinez

From the age of six, Xiuhtezcatl has been out to improve our world. He worked locally to get pesticides out of parks, coal ash contained, and fracking moratoriums. He has addressed the General Assembly at the United Nations in New York. He is currently a plaintiff in a youth-led lawsuit against the US federal government for their failure to protect the atmosphere for future generations.  On a brief visit to Australia he talks with Dr. Karl on how to achieve meaningful change as a youth activist. 

From the age of six, Xiuhtezcatl has been out to improve our world. He worked locally to get pesticides out of parks, coal ash contained, and fracking moratoriums. He has addressed the General Assembly at the United Nations in New York. He is currently a plaintiff in a youth-led lawsuit against the US federal government for their failure to protect the atmosphere for future generations.  On a brief visit to Australia he talks with Dr. Karl on how to achieve meaningful change as a youth activist.

 Xiuhtezcatl Martinez - Climate Change Activist  (31)

Eddie Woo is Head Teacher Mathematics at a government high school in Sydney, Australia - and a whole lot more. He is someone with a gift for teaching and is now internationally regarded for the lessons he posts online with his woo tube channel. https://misterwootube.com/

Eddie Woo is Head Teacher Mathematics at a government high school in Sydney, Australia - and a whole lot more. He is someone with a gift for teaching and is now internationally regarded for the lessons he posts online with his woo tube channel. <a href="https://misterwootube.com/" rel="nofollow" target="_blank">https://misterwootube.com/</a>

How does a maths teacher become an Australian Local Hero ? Meet Mr Woo (108) 

Dr Alice is talking about Ayahusca a South American hallucinogen that may help depression and other mental disorders, nearly Doctor Jessica exploring number stations and the secret messages that haven't stopped despite the end of the Cold War and Dr Karl on whether the silk handkerchief in your top pocket will stop bullets.

Dr Alice is talking about Ayahusca a South American hallucinogen that may help depression and other mental disorders, nearly Doctor Jessica exploring number stations and the secret messages that haven't stopped despite the end of the Cold War and Dr Karl on whether the silk handkerchief in your top pocket will stop bullets.

Ayahusca, Number Stations, Silk Stops Bullets (30)

In this episode - just about, almost on-the-verge of becoming Doctor Jessica on the physics of chemical bonding in spider's silk and how it might help us to build better stuff. Dr Alice on computer modelling predicting the shape of eggs. Dr Karl tells us about the first road trip by car. 

In this episode - just about, almost on-the-verge of becoming Doctor Jessica on the physics of chemical bonding in spider's silk and how it might help us to build better stuff. Dr Alice on computer modelling predicting the shape of eggs. Dr Karl tells us about the first road trip by car.

Spider Webs, The Shape of Eggs & On The Road with Bertha Benz (41) 

Dietitian, Care Collins gives Dr Karl a full 360 on a diet that is getting researchers pumped up. Imagine a menu that stimulated the blood brain barrier, made you think you were full early and might starve cancer cells. Sounds good but there are dangerous side effects in the long term. Ketogenic is a medical diet, is difficult to stick with and may actually have no long term weight loss benefits.  

Dietitian, Care Collins gives Dr Karl a full 360 on a diet that is getting researchers pumped up. Imagine a menu that stimulated the blood brain barrier, made you think you were full early and might starve cancer cells. Sounds good but there are dangerous side effects in the long term. Ketogenic is a medical diet, is difficult to stick with and may actually have no long term weight loss benefits.

The Ins and Outs of the Ketogenic Diet  (65)

We are what we eat. Organic, low fat, pesticide-free, High Fibre ; Consumers are charged extra for foods with health benefits like these. But when food is packaged, how do you know what is really inside ? Welcome to the world of Food Fraud. This Shirtloads podcast stars two British Scientists who have written all it in "Sorting the Beef from the Bull". Bio-Geo-Chemist Richard Evershead and Biologist Nicola Temple. Dr Karl talking with the "Mulder and Sculley" of the food fraud forensic world.

We are what we eat. Organic, low fat, pesticide-free, High Fibre ; Consumers are charged extra for foods with health benefits like these. But when food is packaged, how do you know what is really inside ? Welcome to the world of Food Fraud. This Shirtloads podcast stars two British Scientists who have written all it in "Sorting the Beef from the Bull". Bio-Geo-Chemist Richard Evershead and Biologist Nicola Temple. Dr Karl talking with the "Mulder and Sculley" of the food fraud forensic world.

Food Fraud Forensic Science (33)

Things are not always how they seem: Dr Karl explains how to be buff, good looking and scientifically believable in order to con the gullible. Almost Dr Jessica explains how a statistical quirk could look like a collision with another universe. And Dr Alice explains that how that wine you're drinking could taste better in another bottle while listening to your favourite violinist playing a Stradivarius that may or may not sound better than an ordinary violin.

Things are not always how they seem: Dr Karl explains how to be buff, good looking and scientifically believable in order to con the gullible. Almost Dr Jessica explains how a statistical quirk could look like a collision with another universe. And Dr Alice explains that how that wine you're drinking could taste better in another bottle while listening to your favourite violinist playing a Stradivarius that may or may not sound better than an ordinary violin.

Con Artists, Cold Spots and Stradivarius violins (37)

They're back ! Dr Karl on why carbon dioxide is so insidious in the atmosphere. Dr Alice Motion on the best Instagrams yet of our sun and Dr Jessica Bloom on the rise of bio-robots. The original shirtloads gangsters are in the lab.

They're back ! Dr Karl on why carbon dioxide is so insidious in the atmosphere. Dr Alice Motion on the best Instagrams yet of our sun and Dr Jessica Bloom on the rise of bio-robots. The original shirtloads gangsters are in the lab.

3 doctors on Carbon, the Sun and Xenobots (178)

The best podcast episodes of anyone with an interesting story. With famous guests like Obama, LeBron James, Drake, Oprah Winfrey, Richard Branson, Michelle Obama, Serena Williams, to anyone who has a unique and interesting story to tell. Add episodes you're interested into your queue below!

Best Episodes: Personal Stories & Great Interviews

The Best Multi-Part Documentaries, with documentaries on Obama, Federer vs Nadal, the making of Star Wars, Netflix vs Blockbuster and more. Add episodes you're interested into your queue below!