Glowing planets, shrinking brains and living till you're 150
How is it possible to day dream? Can screen time and AI impact how you age? And what makes the colours of the sunset? Dr Karl answers these...
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Science & Medicine
Dr Karl Podcast
Join Dr Karl Kruszelnicki, Lucy Smith and their scientific guests, with a bunch of curious triple j listeners for a weekly injection of science, myth-bashing and answers!
Episodes
20 of 273 episodesThe full moon, earworms and tickling
Why does cola taste different when it's in a can? How come we shouldn't reheat meat more than once? And why do we sneeze when we get into ho...
Honeybees, climate change and pollination
Why is the sun so good at removing tomato stains? Why do plants change colour in response to cold weather? And are we getting closer to what...
Radio stars, spiral galaxies and threadworms
When will Australia have a total solar eclipse? What determines the life cycle of a star? And why does our body go into 'survival mode'? Dr...
The third eye, scented candles and norovirus
Why do our ears produce wax? What is the storage capacity of the human brain? And will we ever run out of music combinations? Dr Karl answer...
Black tea, pins & needles and toilet doors
Does sneezing cure nausea? Why do brown paper bags ripen produce? And how does aromatherapy work? Dr Karl answers these questions and more o...
Calcium v. iron, E=mc² and The Pill
Is nicotine a laxative? Are mental health conditions hereditary? And can you retrain gut bacteria? Dr Kate Thomas, Dr Caitlin Thurn and Dr K...
Axolotls, hydration and escalators
What does space smell like? Why does a beer taste different with breakfast? And why is the 'feels like' temperature different to the actual...
Endometriosis, oversleeping and 'irritable male syndrome'
Does sex get rid of a headache? If you're on hormonal contraception, do you still release an egg each month? And when you eat corn, why does...
Alzheimer's, furry friends and spider webs
Why do our dogs love us so much? Can the temperature change our sense of smell? And could the evolution of dinosaurs happen again? Dr Karl a...
Cold sores, facial hair and double rainbows
Why do you get a full body shiver after using the toilet? Why is the sky a different colour in WA? And why are celestial orbits on the same...
Dirt bikes, flat earthers and illegal drugs
How do one way mirrors work? Why do you need to sneeze when you look at the sun? And why does driving feel faster at night? Dr Karl answers...
Thylacines, blocked noses and bird flu
How different would the environment be if the thylacine wasn't wiped out? Are animal sightings symbolic? And why do bower birds collect blue...
Pokémon, off-grid festivals and cannabinoids
Why is red light more environmentally friendly? Which science fiction is the most realistic about our present and future? And what triggers...
Pokémon, off-grid festivals and cannabinoids
Why is red light more environmentally friendly? Which science fiction is the most realistic about our present and future? And what triggers...
The meaning of life, shark attacks and the Large Hadron Collider
What is the best kind of shade? Why are some rocks older than others? And is winter the dustiest season? Dr Karl answers these questions and...
Gamer brain, VR immersion and gacha gambling
Can we be profiled by the video games we play? Why does time fly when you're having fun? And what can gaming teach us about real-world scien...
Shower farts, regenerative bodies and bass face
Should you depart from your favourite dish? How soon can we become superhumans? And where is the universe going? Dr Karl answers these quest...
Dog breath, ugly cry face and sleeping pelicans
What is the best method for dunking biscuits in a hot cuppa? Does water weigh the same inside our bodies as out? And is telling a burp from...
Magic mushrooms, hiccup rhythms and meteorites
What will humans evolve next? How do our phones make 3D scans? And why do random objects appear in the ground? Dr Karl answers these questio...