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  

Decoding Chaos #1 with Professor James (373)

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

Cleaner Air with Dr King (372)

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 2 with Professor Lewis (371)

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

The Standard pt 1 with Professor Lewis  (370)

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 2  Prof. Chapman (369)

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

Vaper Trails pt 1 with Prof. Chapman (368)

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 #2 with Dr Remnant (367)

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  

Bee Genes #1  with Dr Remnant (366)

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

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

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

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

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  

Billion-LY Bubble  with Prof Lewis (363)

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   

G-Bombs with Prof Lewis (362)

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

Knot Maths with Assistant Professor Lisa Piccirillo (361)

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 #2 with Prof Lewis (360)

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

Cosmic Ticks #1 with Prof Lewis (359)

What governs the resources, risks and rewards on the Moon, Mars and beyond?  Dr Karl gets a booster shot of Space law with specialist lecturer Duncan Blake.   Drkarl.com Duncan Blake

Space Law 102  with Duncan Blake (358)

What are the rules for human behaviour in Space ?  Dr Karl gets an introduction to Space Law history with specialist lecturer Duncan Blake.   Drkarl.com Duncan Blake

Space Law 101 with Duncan Blake  (357)

Stars & Cows with astrophysicist Prof Peter Tuthill & Wildlife Conservation Biologist Tiahni Adamson (356)  

Soot & Seaweed with Prof. Tuthill & Tiahni Adamson (356)

The story of how a local oncologist took a pledge against Big Tobacco to the United Nations and had it passed. Dr Karl talks with Dr Bronwyn King about her crusade against the merchants of preventable disease through tobacco-free portfolios. drkarl.com tobaccofreeportfolios.org    

Busting big nicotine with Dr King  (355)

Meet tyre nerd and chemist Dr Linda Mitchell. She works in stewardship - trying to improve our recycling of rubber.  How many old Australian tyres are exported and burned each year? Way too many and Dr Mitchell knows how we can do better. DrKarl.com TSA Lindylulu77  

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