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.

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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.    

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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".

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@marcuschown

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

drkarl.com

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