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.
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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…
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 t…
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 ?
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
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.
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.
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How can we measure space? Dr Karl consults a Radio Astronomer on units. Please note: Star Wars and Hans Solo references included.
Could a black hole photobomb a star? Dr Laura Driessen explains.
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 padd…
Matter and Energy continue to raise shadowy questions in physics. Dr Karl tests some recent dark theories with Professor Lewis.
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.
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.
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.
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 wi…
The James Webb Space Telescope has expanded our Universal view. Where is it changing? Dr Karl gets an update from Professor Geraint.
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.