Great Moments In Science

ABC
  • 4.7 (352)
  • NATURAL SCIENCES
  • UPDATED WEEKLY

From the ground breaking and life saving to the wacky and implausible, Dr Karl Kruszelnicki reveals some of the best moments in science.

  1. The Greatest Moment in Science

    23/05/2023

    The Greatest Moment in Science

    Dr Karl was first heard on the wireless in 1981 when he convinced Triple J that a talk about the space shuttle would be good listening because he had applied to be a NASA astronaut. The shuttle did (eventually) launch ... and along with it, the all-science-media career of one Dr Karl Kruszelnicki. This is Dr Karl's last Great Moment in Science, as we know it—but don't worry, he'll still be around and firing on all cylinders—including on Triple J's Science with Dr Karl podcast. Science with Dr Karl

    29 min

  2. 16/05/2023

    Why the 'marijuana munchies' make you feel good

    We know that the drug called cannabis, or marijuana, increases the appetitecommonly called the 'Marijuana Munchies', and we are finally getting closer to knowing what makes it happen. Half-a-billion years ago a biological system evolved to make sure that hungry animals would eat.

  3. 09/05/2023

    Insects fly to the light

    The ancient Romans thought that insects were attracted to bright light, and then there's the well-known phrase, "drawn like a moth to a flame", so it seems like people over many years have spotted insects coming into the lights, at night. But what's the real reason? Host: Dr Karl Kruszelnicki

  4. 02/05/2023

    Dreaming a diagnosis with Dr Karl

    Some sleepers who act out their dreams are later diagnosed with Parkinson's disease. As Dr Karl explains, it's one of a few slightly odd new diagnostic tools.

  5. 25/04/2023

    Sniffing out disease with Dr Karl

    The power of smell can't be understated — our noses don't just sniff out tasty treats, they can also alert us to danger.  In this episode of Great Moments in Science, Dr Karl tells the story of a super-sniffer who might've unlocked a powerful diagnostic tool.

  6. 18/04/2023

    How tall is time? Well, it's all relative

    Atomic clocks are the most precise time-keepers we have. But that doesn't mean they can escape the timey wimey effects of gravity.  In this episode of Great Moments in Science, Dr Karl explains how this enables super-accurate clocks to not just measure time, but height as well.

  7. 11/04/2023

    The physics of dunking biscuits

    Humans have been dunking biscuits for as long as biscuits have existed.  But why do we do it? Why are soggy biscuits so darn good? In this archive episode of Great Moments in Science, Dr Karl submerges himself into the mechanics of this age-old activity.

  8. 04/04/2023

    Want to see an eclipse without travelling? You might be waiting a while

    Thousands of people will descend on the tiny WA town of Exmouth later this month to witness the Moon block out the Sun for a whopping one minute.  But if you're a homebody not all that keen on a road trip, how long might it take to see a total solar eclipse from where you are right now? Dr Karl investigates in this archive episode of Great Moments in Science.

See All (326)

Hosts & Guests

4.7
out of 5
352 Ratings

About

From the ground breaking and life saving to the wacky and implausible, Dr Karl Kruszelnicki reveals some of the best moments in science.

Information

  • Creator
    ABC
  • Years Active
    2016 - 2023
  • Episodes
    326
  • Rating
    Clean
  • Copyright
    © Copyright 2026, Australian Broadcasting Corporation. All right reserved.
  • Show Website
    Great Moments In Science

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