Dr Karl Podcast

By triple j

Science & Medicine

What's Dr Karl Podcast about?

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!

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Suckling babies, mosquitos,...

07.07.2022

How do baby animals (and humans) instinctively know how to suckle when they're born? What purpose do mosquitos have in the ecosystem? How long does a species have to be isolated for it to be considered a 'new' species? Dr ...

Dr Karl Podcast episodes:

07.07.2022 Suckling babies, mosquitos, new species How do baby animals (and humans) instinctively know how to suckle when they're born? What purpose do mosquitos have in the ecosystem? How long does a species have to be isolated for it to be considered a 'new' species? Dr ...
06.23.2022 Blood alcohol concentration, frying chilli, lube Should you keep your tent flaps open? What happens to helium balloons when you let them go? Why does bottled water have a use by date? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith.
06.23.2022 Crumbs, squishing babies, bee deaths Can our eyes change colour? What would happen if a planet disappeared from our solar system? Why don't we all have the same sense of taste? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith.
06.16.2022 Ice baths, black holes, hungry cadavers How do dogs experience time? Will the trip to Mars be dangerous? Does Dr Karl believe in Aliens? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith.
06.09.2022 Eyebrows, carbon dioxide, stomach noises Do ceiling fans work in winter mode? Are tastebuds on the wrong side of the tongue? Can we call blood a solid? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith.
06.02.2022 Happy hypoxia, foggy windscreens, bus vs car passengers Would a body decompose in space? Do noise cancelling headphones protect our ears? When will we create a super human? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith.
05.26.2022 Rose thorns, oil, painkillers Why are thorns on roses less sharp when they are dead? Is it true that oil on Earth is being slowly, but infinitely being replenished? Do painkillers really know how to target pain? Dr Karl answers these questions and more, ...
05.19.2022 Red heads, muscle memory, cold weather Why do red heads get sunburnt so easily? What would happen if humans never developed muscle memory? Does cold weather make you pee more often? Dr Karl answers these questions and more, on triple j mornings with Lucy Smith.
05.12.2022 Red dirt, sugar levels, chemtrails What makes red dirt red? Why do our sugar levels affect our moods? What's the difference between a conspiracy theorist and a science denialist? Dr Karl answers these questions and more, on triple j mornings with Lucy Smith.
05.05.2022 Raw meat, spontaneous human combustion, drunk mosquitoes. Are there health benefits from eating raw meat? Is spontaneous human combustion a real thing? If a mosquito bites me while I'm drunk, does the mosquito get drunk too? Dr Karl answers these questions and more, on triple j mornings ...
04.28.2022 Grass, crumbs, sentience Can lightning make grass greener? What's the closest call we've ever had with a meteorite? Will Artificial Intelligence ever be sentient? Dr Karl answers these questions and more, on triple j mornings with Lucy Smith.
04.21.2022 Antibodies vs Virus, Mars, Mosquitos How can you tell the difference between antibodies and a virus? Would a compass work on Mars? Why are some mosquitos silent and others loud? Dr Karl answers these questions and more, on triple j mornings with Lucy Smith.
04.14.2022 Under-eye bags, fingernail growth, sneezing Why do we get bags under our eyes when we’re tired? Why do my fingernails grow faster when I’ve been drinking? Why do I always sneeze five times in a row – never four, never six? Dr Karl answers these ...
04.08.2022 Double yolkers, common cold, tiredness Where do double yolkers come from? Why is it so hard to shake the common cold? Why does tiredness effect our perception of time and speed? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.
03.31.2022 Manufactured ozone, microwaved food, life advice Why can't we just make ozone in a lab to replenish what has been lost due to climate change? Is it okay to microwave food twice? What's the best life advice Dr Karl has been given? Dr Karl answers these ...
03.24.2022 The multiverse, alien existence and fit astronauts Today Dr Lucy and Dr Karl are joined by special guest astrophysicist Professor Geraint Lewis to answer all your questions from around the cosmos. Can you get moonburnt? Could we ever move at the speed of light? How did the ...
03.17.2022 Salt water, smells, money It's the most triggering question for your local finance bro - why can't we just print more money? How does our brain know when to kick in and smell things? And why doesn't salt water freeze? Dr Karl answers these ...
03.10.2022 Infinite mushrooms, eating spiders, onion tears Are some mushrooms infinite? Why does chopping onions make us cry? What would happen if you ate a venomous spider? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.
03.03.2022 Ear wiggles, tides, cracking joints Is there a difference between a raised heart rate from an energy drink compared to excercise? If we didn't have high tides or low tides, what effect would that have on Earth? Why can some people wiggle their ears without ...
02.24.2022 Skim milk vs full cream, diet fads, gluten Skim milk vs full cream? Is a Keto diet sustainable for your body? Can being pregnant eliminate a gluten intolerance? Dr Karl & Lucy Smith are joined by Professor of nutrition and dietetics, Clare Collins to answers these questions and ...
02.17.2022 Bruise colour, DNA tests and Lightning How does glue work? Does the ocean evaporate? Is there an everlasting supply of lava? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith.
02.10.2022 Sink holes, rewiring the brain and spontaneous orgasms How do clouds work? Will carrots turn you orange? Do our hair and nails keep growing after we die? Dr Karl answers these questions and more, on triple j Mornings.
02.03.2022 Ice cubes, showers, urine Why do ice cubes taste different to water? Do men have worse smelling urine than women? Is showering too often bad for your skin? Dr Karl answers these questions and more, on triple j Mornings.
01.27.2022 Sleep paralysis, disappearing sneezes, carnivorous plants What can you do to prevent sleep paralysis? When a sneeze disappears, where does it go? Why do carnivorous plants exist? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith.
01.20.2022 Freezing bread, lightyears, energy drinks When is the best time to freeze bread? How do we measure lightyears? Are sugar-free energy drinks worse for you than their sugary counterparts? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith.
01.13.2022 Squirrel survival, testosterone, lightning trees Why does the gym make me gassy? Do bugs have blood types? Does sound travel further at the beach? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith.
12.17.2021 Bonus Episode: Giant asteroids, end of the world, aliens What would we do if a giant comet was hurdling towards Earth?
12.09.2021 Global warming, Double yolked eggs and Maggots Is it possible to be too healthy? What happens if we're busting to wee and hold it? Do men get sleepier than women after sex? Dr Karl answers these questions and more, on triple j mornings with Lucy Smith.
12.02.2021 Sunset, sweet cravings, ice cubes How do they predict sunrise and sunset so accurately? Why do people often crave sweet things after dinner? Does hot water actually freeze quicker than cold? Dr Karl answers these questions and more, on triple j mornings with Lucy Smith.
11.25.2021 Big noses, hot showers, sleep debt Do people with bigger noses have a better sense of smell? Why do we like hot showers so much? Do you need to pay back a sleep debt if you stay up late and wake up early? Dr Karl answers ...
11.18.2021 Food cravings, giraffe tongues, white holes Why do we crave certain foods even if it's been years since we last ate them? Why do giraffe's have blue tongues? We know black holes exist, but do are there also white holes? Dr Karl answers these questions and ...
11.11.2021 Rainbows, breath mints, handwriting Why do rainbows form in perfect arcs across the sky? Why does drinking water after eating a mint make the water feel so much colder in your mouth? Is handwriting hereditary? Dr Karl answers these questions and more, on triple ...
11.04.2021 Happy tears, immortal trees, reflections Why do we sometimes cry when we're happy? Can trees live forever? How do reflections actually work? Dr Karl answers these questions and more, on triple j mornings with Lucy Smith.
10.28.2021 Egg heads, Vitamin D and time as we know it How are seedless fruits grown? Why are peanuts the most common allergen? Can painkillers target specific parts of the body? Dr Karl answers your science questions on triple j mornings with Lucy Smith.
10.21.2021 Extra limbs, bald daddies and undies in the wash How can you keep coffee hotter for longer? What's the purpose of fingernails? Can birds get struck by lighting? Dr Karl answers your science questions on triple j mornings with Lucy Smith.
10.14.2021 Probiotics, stinky farts and red, red wine Is it better for the environment to burp or fart? Why am I hungrier when I eat more regularly? Can you overcome a food gag reflex? Dr Karl & Professor Clare Collins answer your questions on nutrition, dietetics and science ...
10.07.2021 Seeing stars, sleep talking magpies, random memories Do magpies talk in their sleep? Can the moon get earthquakes? Is technology stunting our evolution? Dr Karl answers your science questions on triple j mornings with Lucy Smith.
09.30.2021 Spider thoughts, biting cats, anxious dogs What do spiders think about when they're sitting in their web awaiting their prey? How can you help your dog if it has separation anxiety? You have a cat that won't stop biting you. Why? And what can you do ...
09.23.2021 Fingerprints, wombat poo, earthquakes Why is wombat poo shaped like a cube? Does breakfast actually kickstart your metabolism? How much does your DNA determine your intelligence? Dr Karl answers your science questions on triple j mornings with Lucy Smith.
09.16.2021 Ivermectin, spicy chilli, post-pandemic life Is there any proof that Ivermectin combats COVID-19? Will life ever be the way it was before the pandemic? If the whole world was sprayed with disinfectant, would that kill off COVID-19? Host of Coronacast, Tegan Taylor joins Dr Karl ...
09.09.2021 Desires, vaping, cremation Is vaping less damaging than cigarettes? When you hurt yourself, does 'rubbing it better' actually do anything to help? What's better for the environment? Being cremated or buried? Dr Karl answers these questions and more, on triple j mornings with ...
09.02.2021 Ear candles, mullets, nose training What would happen if we woke up one morning and the earth was spinning the other way? Can human beings improve their sense of smell? Do ear candles actually work? Dr Karl answers these questions and more, on triple j ...
08.26.2021 Forgetting memories, hydrogen fuel, wet trampolines Can we train our brains to forget things? Why do some people float in water and others sink? Do you jump higher on a wet trampoline? Dr Karl answers these questions and more, on triple j mornings with Lucy Smith.
08.19.2021 Eating boogers, moon mining, changing flavours Why do we shudder after we yawn? Why do some humans feel compelled to eat their boogers? Why does hot water clean things better than cold water? Dr Karl answers these questions and more, on triple j mornings with Lucy ...
08.12.2021 Dad bods, taste buds, hydrogen water Can you catch a yawn from a dog? Is Hydrogen charged water just a fad? Do animals get dad bods once they find a mate? Dr Karl answers these questions and more, on triple j mornings with Lucy Smith.
08.05.2021 Vaccines, fingernails, static electricity How did scientists create COVID-19 vaccines so quickly? Why can't we control the beat of our hearts like we can control the breath in our lungs? How do the rings of a tree tell us its age? Dr Karl answers ...
07.29.2021 Bionic humans, floaters, eye transplants Why do bones stop growing? Why does having to pee take over all your thoughts? What would happen if you microwaved a human being? Dr Karl answers these questions and more, on triple j mornings with guest host Tyrone Pynor.
07.22.2021 Black holes, blue tongues and gagging How realistic are alternate realities? Why does sleeping with a quilt on make us have bad dreams? Could we survive on a desert island with only corn to eat? Dr Karl answers these questions and more, on triple j mornings ...
07.15.2021 Diamonds, inbred animals, climate change Why hasn't any other being evolved to have human-level intelligence and consciousness? Why do your teeth move during pregnancy? Is climate change effecting the temperature of the core of earth? Dr Karl answers these questions and more, on triple j ...
07.08.2021 Brain freeze, ocean fire, fingers Do birds recognise humans? What is brain freeze? How do we find dinosaur bones? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.

Older episodes

Dr Karl Podcast

What's Dr Karl Podcast about?

Download our free app to listen on your phone

Dr Karl Podcast episodes:

Suckling babies, mosquitos, new species

Blood alcohol concentration, frying chilli, lube

Crumbs, squishing babies, bee deaths

Ice baths, black holes, hungry cadavers

Eyebrows, carbon dioxide, stomach noises

Happy hypoxia, foggy windscreens, bus vs car passengers

Rose thorns, oil, painkillers

Red heads, muscle memory, cold weather

Red dirt, sugar levels, chemtrails

Raw meat, spontaneous human combustion, drunk mosquitoes.

Grass, crumbs, sentience

Antibodies vs Virus, Mars, Mosquitos

Under-eye bags, fingernail growth, sneezing

Double yolkers, common cold, tiredness

Manufactured ozone, microwaved food, life advice

The multiverse, alien existence and fit astronauts

Salt water, smells, money

Infinite mushrooms, eating spiders, onion tears

Ear wiggles, tides, cracking joints

Skim milk vs full cream, diet fads, gluten

Bruise colour, DNA tests and Lightning

Sink holes, rewiring the brain and spontaneous orgasms

Ice cubes, showers, urine

Sleep paralysis, disappearing sneezes, carnivorous plants

Freezing bread, lightyears, energy drinks

Squirrel survival, testosterone, lightning trees

Bonus Episode: Giant asteroids, end of the world, aliens

Global warming, Double yolked eggs and Maggots

Sunset, sweet cravings, ice cubes

Big noses, hot showers, sleep debt

Food cravings, giraffe tongues, white holes

Rainbows, breath mints, handwriting

Happy tears, immortal trees, reflections

Egg heads, Vitamin D and time as we know it

Extra limbs, bald daddies and undies in the wash

Probiotics, stinky farts and red, red wine

Seeing stars, sleep talking magpies, random memories

Spider thoughts, biting cats, anxious dogs

Fingerprints, wombat poo, earthquakes

Ivermectin, spicy chilli, post-pandemic life

Desires, vaping, cremation

Ear candles, mullets, nose training

Forgetting memories, hydrogen fuel, wet trampolines

Eating boogers, moon mining, changing flavours

Dad bods, taste buds, hydrogen water

Vaccines, fingernails, static electricity

Bionic humans, floaters, eye transplants

Black holes, blue tongues and gagging

Diamonds, inbred animals, climate change

Brain freeze, ocean fire, fingers