Shirtloads of Science

This episode i'm joined by Ashley Iredale, a consumer technologist and content producer whose winding career through industrial design has armed him with a trove of quirky tips and practical wisdom.

Ashley breaks down the real efficiency of hand-washing versus dishwashers, explains how a dishwasher can double as an oven, and settles the age-old question of how toilet paper should hang. We also dig into his non-linear career journey and how it led to his deep well of surprising insights. There was so much to cover that Part Two lands next week!

Linkedin: Ashley Iredale<...

In this episode, I'm joined by the legendary Dame Susan Jocelyn Bell Burnell - the pioneering astrophysicist who discovered pulsars, launching an entirely new field of astrophysics.

She began her PhD searching for quasars, but soon noticed a strange, repetitive signal appearing night after night - so peculiar she jokingly labelled it LGM ("Little Green Men"). That signal would become one of the most important astronomical discoveries of the century, though the credit and Nobel Prize were controversially awarded to her supervisor.

Dr Bell Burnell also shares why she donated $4.3 million of her own prize...

This week I'm joined by John Staton, one of Australia's leading sunscreen-testing experts, to unpack the big headlines surrounding sunscreen safety. A recent Choice report revealed that 16 out of the 20 tested sunscreen products failed to meet their advertised SPF rating by a significant figure. John helps us to understand what is really going on. He breaks down how sunscreens actually work and the science behind SPF testing and why so many products fell short. 

In this episode, friend of the show and astrophysicist Professor Geraint Lewis returns to help me wrap my head around one of the strangest ideas in modern physics: Time Crystals.

After stumbling across a Nature article that left my brain pleasantly scrambled, I called up Geraint for a deep-dive into what time crystals are and why physicists are so excited about them.

We explore why Time Crystals don't have real-world applications yet, but how they could open entirely new frontiers in future technology. 

In this episode, futurist and award-winning scientist Dr Catherine Ball dives into the state of science in Australia, uncovering the good, the bad, and the overlooked. From humanoid robotics and wearable exoskeletons transforming healthcare, to Australia's lagging space economy, Ball offers an unflinching look at where we stand. She also highlights world-class cancer detection research happening in Australia, like PROCAN and early ovarian cancer screening innovations that deserve far more recognition. Passionate about inspiring the next generation, Ball shares her advice for young Australians ready to shape the future of science

ww.drcatherineball.com/

In this episode, I'm joined by Professor Clare Collins, Australian dietitian and Professor of Nutrition and Dietetics at the University of Newcastle. Clare is my go-to expert when it comes to all things nutrition, and today she's here to unpack the often confusing world of processed and ultra-processed foods.

We dive into what really separates the two, explore the role of additives, emulsifiers, and flavour enhancers, and discuss how some of these ingredients, designed to make foods more appealing, may be doing our health more harm than good. Plus, she shares practical, no-nonsense tips to help you mak...

In this episode, we chat with Dr. Renee Goreham, a physicist and nanotechnologist at the University of Newcastle, and passionate science communicator. Renee is an experimental physicist exploring how our breath could hold the key to detecting lung cancer early—by identifying specific proteins as biomarkers. We also delve into her PhD student's exciting research into a new red-light laser diagnostic tool for breast cancer. Along the way, Renee breaks down the basics of cell biology and shares her inspiring, non-linear journey through physics, nanotech, and beyond. A brilliant example of multidisciplinary science in action.

Follow Renee on...

In this episode, we speak with Associate Professor Leszek Lisowski, Head of the Translational Vectorology Unit at the Children's Medical Research Institute (CMRI), about the cutting-edge world of gene therapy. He explains how viral vectors are engineered to deliver life-saving treatments for rare genetic diseases - many of which are so uncommon, they're only known by the name of the affected gene. Despite being often overlooked, genetic diseases impact 10% of adults and 30% of children in hospitals. Leszek sheds light on the challenges of diagnosis, the promise of emerging genetic testing, and how his work is paving the way for...

In this episode, we're joined by Associate Professor Sharna Jamadar, a cognitive neuroscientist at Monash University, to explore how the brain uses energy, and how that changes across the lifespan. Did you know that a 10-year-old's brain uses over 50% of the body's total energy, compared to just 20% in adults? We dive into why younger brains work harder, the role of synaptic pruning and proliferation, and how the brain's organisation impacts cognitive efficiency. We also touch on the importance of glucose metabolism and its connection to age-related disorders like Alzheimer's. A fascinating look at the energy demands of our most...

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 article on a newly observed "onionlike" space explosion that may reveal a new type of supernova. We dive into what actually happens when a star dies, the onion-layer buildup of elements through nuclear fusion, and how these cataclysmic blasts forge the building blocks of life on Earth. Plus, we explore what this might mean for the ultimate fate of our own Sun.

www.geraintflewis.com/

Linkedin: Geriant Lewis

In this episode, friend of the show Geriant Lewis, Professor of Astrophysics at the Sydney Institute for Astronomy within the University of Sydney, joins us to unpack a fascinating New Scientist article theorising on how a strange line of dwarf galaxies may have formed. 

We explore how high-speed collisions between dwarf galaxies can scatter gas and stars across space, sometimes giving rise to entirely new tidal galaxies. Geraint explains the latest thinking on where these dwarf galaxies come from and how these cosmic smash-ups might even shed light on one of the biggest mysteries in physics: the tr...

In part two, Associate Professor Marian-Andrei Rizoiu from the University of Technology Sydney explains how misinformation and toxic online cultures spread. We dive into the "manosphere pipeline" targeting boys as young as 10, its real-world impacts on schools and families, and how it can escalate into radicalisation.

Rizoiu outlines his team's six-stage pipeline - from passive curiosity to active involvement - and why simply giving people facts doesn't solve the problem. Instead, this is a human challenge, and his lab is exploring new ways to diffuse and counter online misinformation before it turns dangerous.

Linkedin: Marian-Andrei...

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 Sydney. Drawing on a three-year research project into the misinformation ecosystem, he reveals that online conspiracies aren't just about false facts. Instead, they meet deep human needs for belonging and identity. 

We explore the idea that misinformation is less a content problem and more a human problem, fueled by the attention economy. Rizoiu also weighs in on the growing debate around restricting social media use, such as proposed bans for under-16s, unpacking th...

In this episode, we sit down with two of today's most prominent defenders of science: Professor Michael Mann, world-renowned climate scientist, and Professor Peter Hotez, vaccine researcher and advocate for global health equity. Together, they've co-authored Science Under Siege, a powerful new book exposing the forces behind the global anti-science movement.

We explore the surprising parallels between climate denial and vaccine misinformation, and how both Mann and Hotez have faced personal attacks simply for standing by the evidence. They break down the five key drivers of anti-science - plutocrats, professionals, propagandists, petrostates, and the press - and...

In part two of our conversation with Professor Carolyn Hogg, Research Manager of the Australasian Wildlife Genomics Group at the University of Sydney, we dive deeper into the science and strategy behind threatened species management.

Carolyn shares how her team is developing crucial genetic data to guide conservation, including breed-and-release programs with species like the Tasmanian devil. We discuss the vital role of biodiversity in sustaining planetary health, and the ambitious Earth Biogenome Project, which aims to map the genomes of all 12 million species of eukaryotic life on Earth.

Beyond the lab, Carolyn reveals how...

From collecting urine samples in Antarctica to sampling whale snot to study reproduction, Dr. Carolyn Hogg's career is anything but ordinary. In this episode, she shares how her passion for protecting threatened species led her down some unexpected paths, including earning the nickname 'Dr. Snot'.

We chat about her PhD on whale behaviour, wild whale facts, and the creative ways scientists gather data in the field. There was so much to cover, we had to split it into two! Part 2 dives into her groundbreaking work in conservation genetics.

Linkedin: Carolyn Hogg

X: @HoggCarolyn...

In this episode, Professor PJ Cullen, Chemical Engineering expert from the University of Sydney, breaks down the global nitrogen challenge. We explore why nitrogen is essential for life, the history of fertiliser - from the Guano Wars to the energy-intensive Haber-Bosch process - and how today's nitrogen production is harming the planet. Cullen introduces PlasmaLeap, his startup using non-thermal plasma to mimic lightning and fix nitrogen sustainably. We also dive into the risks of nitrogen storage, the 2020 Beirut explosion, and the urgent need to electrify chemical industries. 

https://www.plasmaleap.com/

Linkedin: PJ Cullen

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 media ban, including the personal data (often times photos or government documents) sites may demand, and how these security practices can be questionable. 

Troy explains why we should be thinking more about data minimisation and the dangers of unnecessary data retention. We go through the safest multi-factor authentication methods, from SMS to physical keys, and Troy shares a personal phishing story, reminding us that no-one is immune to hacking thanks to i...

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 billion every year, we also look at the rising threat of ransomware and why it's so hard to fight. T...

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 offer hope, underscoring why optimism remains essential in the fight for a livable future.

Linked in: Sarah Pe...

I had the honor of sitting down with Professor Donna Strickland, Nobel Prize-winning physicist 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 Academy at 5AM (?!), Donna shares insights into her discovery of chirped pulse amplification (CPA), a revolutionary technique that changed the field of high-intensity lasers.

We discuss the science behind CPA and the moment she accidentally broke...

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 influence of AI — with up to 90% of internet content projected to be AI-generated by the end...

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 radical platform — a place where history can be written in real time, sometimes even before eve...

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

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

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 of flight. We scratch at the very surface of the topic in an episode that could easily take over 20 hours.

Connectt with Dr. Graham Wild on Linkedin

Twitter/ X - @aerospacedoctor

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 routines. Holly shares practical refreshing techniques that save water, and why she recommends everyone have a "rewear chair."<...

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
https://theconversation.com/ice-baths-are-popular-for-exercise-recovery-and-general-wellness-but-what-does-the-science-say-250649

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

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

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 undocumented immigrants, with estimates suggesting that up to 30% of the labor force lacks legal status...

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 Sydney, Faculty of Science

Toliman: https://toliman.space/

Boris Kuhlmey
www.sydney.edu.au/science/about/our-people...

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.

Dr Karl uncovers a lifelong Australian quest to restore comfort and hearing with custom made eardrum transplants. Called Cleardrums, Professor Marcus Atlas is close to passing regulatory hurdles for human trials. Ep407 [Repeat]

drkarl.com

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 healthy lives. Ep396 [Repeat]

Healthy Parents Healthy Kids by Nick Fuller

DrKarl

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 part of the solution. Ep379 [Repeat]

Dr Karl

Dr Sirks

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 millions of tons. Australian scientists have a very cool answer with seaweed.

drkarl.com

seaforest.com.au

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

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

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 takes Dr Karl inside your sweat glands to discover the physics of keeping cool.   

DrKarl.com

Prof Ollie Jay

Author and astrophysicist Marcus Chown is a great explainer. A British stargazer, he studied under Richard Feynman in California. Dr Karl puts him to the test talking about Marcus' latest book on black holes "A Crack in Everything".

DrKarl.com

@marcuschown

Dr Karl consults with circular economy expert, experienced waste manager, change maker and garbologist Belinda Chellingworth. Waste is expensive so well-designed product cycles makes it better for us all.

drkarl.com  

BC Consulting

Physics on both galactic and personal scales are explored and answered with Dr Jessica Bloom and Dr Karl.

drkarl.com

.

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 of finding Earth 2.0 ? 

drkarl.com

dr sara webb

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

Waste is expensive so well-designed product cycles makes it better for us all.

drkarl.com

BC Consulting

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 parts, fluids, graphic descriptions and one swear word.

drkarl.com 

What the duck podcasts

Global Warming is caused by burning fossil fuels.  "Slick: Australia's Toxic Relationship With Big Oil " is journalist Royce Kurmelovs' account of our role.  Dr Karl and Royce and explore how the science was silenced Down Under.

drkarl.com

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-spotted rocks could mean and Dust devil strategies. 

drkarl.com

Dr Adrian J Brown

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 museums. Dr Karl explores tactics in the war on Pseudo and Anti-science.

drkarl.com

Cosi.org

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 Karl asks Stanford University psychiatrist and leading researcher on hypnosis Dr David Spiegel with 50 year's experience.

drkarl.com

Dr Spiegel

What will our human space colonies look like? Dr Karl checks with research spanning more than 10,000 years. Meet University of Sydney's Professor Roland Fletcher.

drkarl.com

Prof Fletcher

Stand-up comedian, ex-maths teacher and author Matt Parker chats about his bestselling book on three-sided figures called Love Triangle. Dr Karl explores what fascinates us about trigonometry.

drkarl.com

matt parker

When Artificial Intelligence is everywhere what should be the rules? Dr Karl and Natasha Blycha test Isaac Asimov's Laws of Robotics and find they need updating.

drkarl.com

Author and astrophysicist Marcus Chown tells of the forgotten Australian female astronomer who helped discover the first black hole. Dr Karl digs deeper into Marcus' latest book on black holes "A Crack in Everything".

DrKarl.com

@marcuschown

In this repeat episode, Dr Karl uncovers a lifelong Australian quest to restore comfort and hearing with custom made eardrum transplants. Called Cleardrums, Professor Marcus Atlas is close to passing regulatory hurdles for human trials.

drkarl.com

Prof Puckett from the US explains how America lost its fire ant war  and Jess Ward-Jones on the struggle to learn what is killing our Alpine Eucalypts (Snow Gums).

drkarl.com

Professor Richard Scolyer is the 2024 joint Australian of the Year. Dr Karl probes skin cancer therapies and immunotherapies with a researcher who has put his life on the line.

drkarl.com

https://twitter.com/ProfRScolyerMIA

https://www.facebook.com/ProfRScolyer

https://www.instagram.com/profrscolyer/?hl=en

Phones made today are super smart. Fast and versatile they can be so powerful to be spooky. Dr Matt joins Dr Karl to peel back the AI layers for a set of rules for the future.

Mining Engineer, Reality TV star, Astrophysicist, Author - What's left  for Dr Matt?

If we need to fully understand space we need more time - lots of it. Beyond the Hubble sphere things gets lumpy.

drkarl.com

Dr Karl asks a fellow physicist for the telltale signs when powerful people spread untruths. They are easy to spot and nasty.

DrKarl

The graph points skywards. A thousand of years of data says "stop burning carbon". Prof Mann tells Dr Karl of how the USA responded to his articles in the early 1990s.

DrKarl

Dr Karl interviews Dr Bloom in NYC on the ethics of Artificial Intelligence. If AI delivers misinformation, how could we tell?  

Dr. Karl

At the moment there are two G's in AI. Dr Karl gets the 360 tour of both with Dr Jessica Bloom in New York City.

DrKarl

Edwin Hubble is world famous. What about Henrietta Swan Leavitt? She found a way to measure and classify the universe. In Dava's book "The Glass Universe" she references the half million glass slides Henrietta and other women used to document both the northern and southern skies. 

There is a family of chemicals that has drug companies popping corks. Obesity researcher Dr Nick Fuller explains to Dr Karl how they work and why they sometimes fail.

Healthy Parents Healthy Kids with Dr Nick Fuller

DrKarl

Dr Tom Crawford explains to Dr Karl how using fluid density might improve your sporting performance. Listen out for duelling and marathon running references.  

TomRocksMaths

drKarl.com

Playing sport on a rotating planet has advantages. Dr Tom Crawford gives Dr Karl tips on using Maths to score more goals and break records.

TomRocksMaths

Drkarl.com

When degenerate electrons meet 0.47 of a solar mass what happens? This is the start of Dr Kirsten Banks' PhD thesis. Dr Karl investigates the secret behaviour of Red Giants in the Milky Way and their Helium flashes.  

Kirsten Banks (astrokirsten.com.au)

DrKarl.com

The bird family tree may need pruning. Geneticists have made new connections that take us back to the great extinction event. Professor Ho explains to Dr Karl how this is changing our views on dinosaurs and chickens.

Prof Simon Ho

DrKarl.com

Dr Karl learns a new German word 'dunkelflaute'. Rare in Australia yet it plays havoc in colder countries. Yet another reason why atomic reactors are a poor choice for Australia as Dr Barnes explains.

Dr Barnes

drkarl.com

Under current net zero plans, local renewables should directly supply 75% of our energy needs. What about the remainder? Dr Karl consults an engineer on why atomic reactors are a very poor choice for Australian conditions.

Dr Barnes

drkarl.com

Which planetary moons are the best? Space fanatic Kate Howells puts Dr Karl in orbit around some of our most interesting lumps of stuff. How will Earth's moon rate ?

@SpaceKateH

Drkarl.com

A shadow of Covid-19 lingers for many. Dr Karl continues his discussion with front-line clinician Professor Steven Faux. Good diagnosis and management offer some a healthy future. 

drKarl.com

Long Covid

Poor health lingers after some Covid-19 infections. Dr Karl discusses the symptoms and solutions with a front-line Australian clinician as they delve into his book 'Long Covid'.

drKarl.com

Long Covid

Physics experiments, two centuries old, can still be used to probe matter and energy. Caitlin Thurn takes Dr Karl through the simple yet extraordinary results.   

Dr Karl fact checks with Professor Lewis. What is the current understood state of the Universe and how close is the end ?

Geraint F Lewis

Dr Karl.com

Professor Clare Collins explains her ongoing research into one of the world's big killers - blood pressure. 

Prof Clare Collins

Dr Karl

Dr Karl visits a list of stellar phenomena with interpretive help from radio astronomer Dr Laura Driessen. Topics include brown dwarfs, proper motion, Jumbos and Universal wobbles. 

https://astrolaura.com/

drkarl.com

Dr Karl investigates the science of rear emissions with a dietetics Professor Clare Collins. How much per day? What makes them smell? What makes them feel hot?

Prof Clare Collins

Dr Karl

Crops under attack, falling nutrition, viruses spread by Insects. Dr.Trebicki researches agriculture on a warming planet and the news is not great. Dr Karl addresses the myth that Carbon Dioxide is good for all plants.

@PiotrTrebicki
Dr Karl

Silicon chips are everywhere. Will they continue to multiply ? Does meeting carbon reduction targets rely on Solid State efficiency ? Dr Karl talks benefits and costs with Dr Lang.

Dr Karl

Dr Lang

There is a perception that the worst pesticides were banned years ago. So why are Insects (including bees) in decline? Dr Sanchez-Bayo says a family of water soluble pesticides are to blame. He names them and wants to know why they are still being sprayed in Australia. 
Dr Sanchez-Bayo

Dr Karl

One of the most popular diets today was studied by professor Varady over 20 years ago. She now teaches in Chicago. Dr Karl finds out why intermittent fasting is so successful. 

Dr Karl

Prof Krista Varady

Cat ladies, Australians and Chickens have all helped to advance our knowledge of Viruses and their link with Cancer. Dr Gregory has investigated the history and written a book about how we got where we are. 

dr Karl

 A/Prof Morgan

X: @DrGMorgan

Threads: @dr.gregory.morgan

Blue Sky Social: @drgregorymorgan.bsky.social

When Aircraft accidents happen we investigate how and why. Dr Sonya Brown tells Dr Karl about the process of improving safety and the importance of learning from incidents.     

DrKarl.com

Dr Sonya Brown

The observed Universe is very binary and occasionally poly. Professor James takes Dr Karl inside a collapsing star and suggests how the last ray of starlight will shine.

Dr Karl

Professor James

How should we explain bumps in the observations of Stars? Cosmology is full of intangible forces. Professor Renee James explains "Helium Flash", why it is mostly invisible to us and when density matters.

Dr Karl

twitter@drcrj

Lung Disease is killing more of us each day.  As temperatures rise, why is our air more contaminated ?  Dr King explains how it's happening and what to do about it.

Dr Karl

Dr Bronwyn King

In part 2,  Prof Lewis introduces Dr Karl to Quarks, Leptons and Bosons. It's a messy subatomic zoo and still our Standard Model of everything.
Avoid brain pain and listen to part 1 first . 

Dr Karl

Professor Geraint Lewis

The Standard Model for everything ... is full of weird names and strange numbers. In part 1,  Prof Lewis explains to Dr Karl how we got into this mess and why this mess still holds true.

Dr Karl

Professor Geraint Lewis

Vapes are 21st century inventions but the science of smoking and its dangers are well known. Prof. Chapman tells Dr Karl how Vapes are likely to be worse than tobacco, why "Puff Parameters" lead to such conclusions, and how lung cancer became a top killer.

Dr Karl.com
simonchapman6.com

On Jan 1st , Australians have new buying restrictions for vapes. Prof Chapman guides Dr Karl through the Science of Nicotine addiction, how to battle Big Tobacco and why access rules must change.
Dr Karl.com
simonchapman6.com

Epigenetic jellies did not help. Feral bees made it worse.  When a species-jumping parasite landed in Australia, our biosecurity controls ultimately failed. Bee geneticist Dr Remnant explains to Dr Karl how we lost round one against Varroa and the battles now being planned.

DrKarl.com

Dr. Remnant

Human prosperity has risen on the wings of bees - until recently. A species-jumping parasite has landed in Australia. Bee geneticist Dr Remnant explains  to Dr Karl how and why this is so risky.

DrKarl.com

Dr. Remnant

Space hardware needs to be reliable, affordable and repairable.  Recycling rockets and reprogramming helicopters are all part of a day's work for support staff.

 Adrian Brown

Dr karl

Salts prove Mars once had water. The rings tell us more about how and when this happened. Also the story of the lost chopper and how they found it. Dr Karl with first-hand accounts from Percy's driver. 

Adrian Brown

Dr Karl

Dr Karl gets a detailed briefing on a giant starry bubble just announced. Professor Lewis includes CMB, BAOs and traces of Dark Matter in his explanation.

DrKarl.com

Geraint F Lewis

There are F Bombs in the Oppenheimer movie but no mention of G Bombs. Dr Karl probes Prof Lewis for the original source of atomic energy . The answer is surprising. 

DrKarl.com

Geraint F Lewis