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 the Science with Dr Karl podcast (from Triple J ..read more

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 ..read more

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 ..read more

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.   ..read more

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 ..read more

Green potatoes — would you like them here or there? Would you like them anywhere? Well as Dr Karl taught us last week, potatoes contain a potentially deadly chemical, and a green tinge is its greatest tell.  In this archive episode, we explore why green potatoes are best avoided.  ..read more

Given the right (or wrong) circumstances, the humble potato packs a punch.  It contains a chemical that could kill if ingested in large amounts. The catch-22? That chemical is exactly why potatoes taste so good.  In this archive episode of Great Moments, Dr Karl digs into the science.  ..read more

What you eat or drink just after you finish pumping iron is crucial to laying down muscle.  Dr Karl weighs up the best way to bulk up, in this archive episode of Great Moments in Science from 2011.  ..read more

The destructive force of a wall of snow is well known. Major avalanches can not only kill, they can also completely reshape a landscape.   But it's not just mountainsides we need to worry about. There are also avalanches happening under the surface of the ocean — forging canyons and threatening our telecommunications ..read more

There are plenty of reasons why a person might poke their tongue out.  Sometimes it can be a rude or cute gesture. Maori warriors do it as a sign of defiance, and Tibetans do it as a greeting. But many times it's a sign of concentration. So here’s why your tongue helps your brain think. Host: Dr Karl Kruszelnicki ..read more