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Next up on the Radio

  • Wednesday 4th February 2026
    9:30 am - 10:00 am

    Dr Karl joins Sarah Cumming on ABC Gold Coast

  • Wednesday 4th February 2026
    7:00 pm - 7:30 pm

    Dr Karl joins Kelly Higgins-Devine on ABC Brisbane/Queensland

  • Thursday 5th February 2026
    11:00 am - 12:00 pm

    Dr Karl joins Lucy Smith on ABC Triple J Science Mornings

  • Thursday 5th February 2026
    2:00 pm - 2:30 pm

    Dr Karl joins Joel Rheinberger on ABC Hobart


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Australian Geographic

The truth about Uluru

The phrase ‘world’s largest monolith’ makes a nice story for tourists. Just don’t say it near a geologist. OVERSEAS, ULURU IS the essential symbol of Australia. It also has enormous significance to the local Anangu people. The story told to tourists, and to Australian schoolkids, is that Uluru is the world’s largest monolith. A monolith […]

Uncategorized

Poo shapes, floating poop, the three second rule.

Dr Karl is away for the month, so science journalist Bianca Nogrady is stepping in to be your science sherpa on triple j. And joining her today was Professor Clare Collins, Nutritionist at the University of Newcastle.


Uncategorized

Cheek fillers, disappearing allergies and shower stinkies

Why do certain sounds give you goosebumps? Can drinking cows milk cause lots of health problems? Why does your body twitch as you’re falling asleep? Dr Karl answers these questions and more, with host Linda Marigliano on triple j Mornings.

Australian Geographic

Australian breakthroughs: the cervical cancer vaccine

Dr Karl looks at how scientists have combated cervical cancer since the early 20th century. WAY BACK IN medical school I decided that my favourite organ was the uterus. That’s because it does its amazing job with a very high success rate – and only very occasional assistance from us. The cervix forms the bottom […]