Dr Karl Kruszelnicki

Shirtloads of Science

Science EN ↓ 467 episodes

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. Series Producer: Isabelle BentonTechnical Producer: Maya Cook

Author

Dr Karl Kruszelnicki

Category

Science

Latest episode

Jul 4, 2026

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Episodes

Blood Pressure with Prof Collins (384) 19.05.2024

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

Dr Driessen decodes (383) 12.05.2024

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

Fart Busting with Prof Collins (382) 05.05.2024

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

The Nymphageddon with Dr. Trebicki (381) 28.04.2024

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    

Solid State Logic with Dr Lang (380) 21.04.2024

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

Neonicotinoids with Dr Sanchez-Bayo (378) 07.04.2024

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  

iFasting with prof Varady (377) 31.03.2024

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

Viral History with A/Prof Morgan (376) 24.03.2024

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. greg ory.morgan Blue Sky Social: @dr greg orymorgan.bsky.social

Safe Design with Dr Sonya Brown (375) 17.03.2024

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  

Decoding Chaos #2 with Professor James (374) 10.03.2024

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

Decoding Chaos #1 with Professor James (373) 03.03.2024

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  

Cleaner Air with Dr King (372) 25.02.2024

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

The Standard pt 2 with Professor Lewis (371) 18.02.2024

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 pt 1 with Professor Lewis (370) 11.02.2024

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

Vaper Trails pt 2 Prof. Chapman (369) 04.02.2024

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

Vaper Trails pt 1 with Prof. Chapman (368) 28.01.2024

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

Bee Genes #2 with Dr Remnant (367) 17.12.2023

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  

Bee Genes #1 with Dr Remnant (366) 10.12.2023

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  

Repair & Recovery with Dr Adrian Brown from NASA (365) 03.12.2023

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

Martian Bath Rings with Dr Adrian Brown from NASA (364) 26.11.2023

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

Billion-LY Bubble with Prof Lewis (363) 19.11.2023

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  

G-Bombs with Prof Lewis (362) 12.11.2023

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   

Knot Maths with Assistant Professor Lisa Piccirillo (361) 05.11.2023

Dr Karl meets Assistant Professor Lisa Piccirillo who unravelled an age-old knotty problem with four dimensional topology.  Professor Piccirillo will deliver the Simon Marais Memorial Lecture at The University of Sydney on 7 November, register here. Dr Karl Professor Lisa Piccirillo

Cosmic Ticks #2 with Prof Lewis (360) 29.10.2023

How far can we "see" through Space-Time? Professor Lewis takes Dr Karl to a place where everything is in slo-mo (relatively). The discussion naturally concludes with Time Machines. DrKarl.com Geraint F Lewis

Cosmic Ticks #1 with Prof Lewis (359) 22.10.2023

How do Cosmologists measure Space-Time? Professor Lewis explains Einstein's clocks and the new cosmic ticks.  DrKarl.com Geraint F Lewis

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