Shirtloads of Science

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

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.    H...

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

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? Ep342 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. 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. drkarl.com    

How can we measure space? Dr Karl consults a Radio Astronomer on units. Please note: Star Wars and Hans Solo references included. drkarl.com

Could a black hole photobomb a star? Dr Laura Driessen explains. drkarl.com

Too hot for synthesis ? Too cool to stick ? The early universe is a bog for electrons . Dr Karl gets the latest on Dwarfs vs Dwarves with Prof Lewis.

Electricity is how Australians get to 43% net zero by 2030. Transport must be part of that plan. Dr Sturmberg has been testing strategies to put electric cars on the grid, in the home and out in paddocks. Recorded in Dec 2022 information was correct then. bjornsturmberg.com drkarl.com

Matter and Energy continue to raise shadowy questions in physics. Dr Karl tests some recent dark theories with Professor Lewis. drkarl.com geraintflewis.com

Why do popular weight loss programs fail just when you feel they should work ? Dr Nick applies science to a healthy body and has good news.  drkarl.com interval weight loss  

In dating shows there is always the promise of a perfect match. Can this idea be found in Astrophysics ? Dr Karl checks with Professor Lewis.   drkarl.com geraintflewis.com  

What are quantum computers? Dr Jessica explains the world of quantum and what to expect in the decades to come.  

What are the biggest black holes called? Supermassive. Dr Jessica Bloom talks about these cosmic monsters and the amazing technology used to photograph them.

ChatGPT launched for free in 2022. Like Google it devoured vast data but regurgitated it in human-like responses. Is it truly a marvel? Dr Karl and Prof Toby Walsh put ChatGPT to the test.  

Future archaeology may see our time now as an "Age of Plastic". Already sedimentary rings are forming. Dr Karl discusses solutions with Bioplastics and Dr Yi Shen.  drkarl.com  

Bird Brains are different. Professor Irene Pepperberg has been probing their psychology for decades. She is the author of the NY Times bestseller 'Alex and Me', the story of her 30-year experiment with a grey parrot.  Alex the parrot

The James Webb Space Telescope has expanded our Universal view. Where is it changing? Dr Karl gets an update from Professor Geraint. drkarl.com geraintflewis.com  

China has a Lunar landing program. It is as ambitious as NASA was in 1969. Dr Karl probes Space journalist Bradley Perrett on how soon we might see Chinese craft on the moon. drkarl.com  

NASA vs Space X vs Virgin vs China vs Russia. Today's Space Race is multi-dimensional and growing. Australia is about to start its own program. Dr Karl talks with space journalist Bradley Perrett about the road ahead. drkarl.com   

"Alternative facts" ? Claire Klingenberg is an expert at debunking such things. In Europe she engages, listens and changes hardened conspiracy and "woo" theorists. She is the Chair of the European Council of Skeptical Organisations and shares her wisdom with Dr Karl. @ClaireAccendit Drkarl.com

AI is hardware-based. It runs on electrons.  Synthetic biology is where Biotech meets IT. It will revolutionise manufacturing & automation. Is a simultaneous Green & IT revolution on its way? Professor Claudia Vickers tells us more. drkarl.com

Is fair pay for workers a modern idea? How about sustainable agriculture ? A Sydney museum has artifacts to show these are ancient concepts from far away. Should they be sent home? Dr Karl discusses the merits of archaeological repatriation with Dr. Barker. sydney.edu.au/museum drkarl.com  

On the surface of Mars, the NASA Perseverance Rover is bottling rocks to be returned to Earth. How will they get back? Why are the samples so valuable? Dr Brown, Australian Scientist with the mission, has the latest news in the second part of his discussion with Dr Karl. @DrAdrianJBrown1 drkarl.com