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Great Moments In Science

by ABC

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Latest episodes

The Greatest Moment in Science

May 23, 2023 · 29 min

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…
Why the 'marijuana munchies' make you feel good

May 16, 2023

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…
Insects fly to the light

May 9, 2023

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…
Dreaming a diagnosis with Dr Karl

May 2, 2023

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.
Sniffing out disease with Dr Karl

April 25, 2023

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…

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

April 18, 2023

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…
The physics of dunking biscuits

April 11, 2023

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

April 4, 2023

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…
I do not like green eggs and ham... or potatoes?

March 28, 2023

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…
Potentially poisonous potato no small fry

March 21, 2023

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…
Of Mice and Milk

March 14, 2023 · 6 min

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.
Avalanche under the sea

March 7, 2023 · 7 min

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…