Explore every episode of the podcast Dr Karl Podcast

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 was portrayed in the movie Avatar? 

Dr Rose Kerr and Dr Clancy Lester answer these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

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 Karl answers these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

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 answers these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

Does sneezing cure nausea? Why do brown paper bags ripen produce? And how does aromatherapy work? 

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

Is nicotine a laxative? Are mental health conditions hereditary? And can you retrain gut bacteria?

Dr Kate Thomas, Dr Caitlin Thurn and Dr Karl answer these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

What does space smell like? Why does a beer taste different with breakfast? And why is the 'feels like' temperature different to the actual temperature?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

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 it come out the other end in one piece? 

Dr Naomi Koh Belic and Dr Theresa Larkin answer these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

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 answers these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

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 horizontal plane?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

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 these questions and more on triple j Mornings with Sam Lane. Got a question for Dr Karl - submit it here https://ab.co/askKarl

How different would the environment be if the thylacine wasn't wiped out? Are animal sightings symbolic? And why do bower birds collect blue items?

Dr Karl and Deadly Science's Corey Tutt answer these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

Follow Deadly Science here: 

Why is red light more environmentally friendly? Which science fiction is the most realistic about our present and future? And what triggers thirst versus hunger?

Dr Karl and Sci_Burst’s Ella and Isabel answer these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

Listen to Sci_Burst here or wherever you get your podcasts!

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 more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

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 science?

Dr Karl and Professor Marcus Carter answer these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

Find out more about Marcus' work with Sydney Games and Play Lab here!

Should you depart from your favourite dish? How soon can we become superhumans? And where is the universe going?

Dr Karl answers these questions and more on triple j Mornings with Sam Lane. Got a question for Dr Karl - submit it here https://ab.co/askKarl

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 a fart just a gut feeling? 

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

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 questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

Are we being stalked by fish? Can pine cones predict the weather? And how do planes actually take off?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

Why are we obsessed with true crime? Do we need to be afraid of death? And does our water come from dead people?

Dr Karl and Dr Hannah Gould answer these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

And stay up to date with Dr Hannah via her socials!

If you or anyone you know needs support, help is available. Call Lifeline on 13 11 14.

Producer: Josh Brennan

Science with Dr Karl is an ABC podcast, produced by triple j. It is recorded on Gadigal Land. We pay our respects to elders past and present. We acknowledge Aboriginal and Torres Strait Islander peoples as the First Australians and as the original and continuing innovators of science, technology, engineering and mathematics on the land we live, work, and learn.

Could artificial intelligence learn to have a personality? How powerful would AI become with a quantum computer? And what is the best way to adapt to a rapidly-changing world?

Dr Karl and Dr Petr Lebedev answer these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

And make sure to stay up to date with Petr via his socials!

Is blood really a liquid? Can cats predict a period? And would a soft drink save your life in the wild?

Dr Karl and Dr Theresa Larkin answer these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

Stay up to date with Theresa's work via her socials: @drtheresalarkin

When are we going to start time travelling? Why does our brain slow down in near-death experiences? And how do we know what it's like to lick different surfaces? 

Dr Karl, Professor Geraint Lewis and Caitlin Thurn answer these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

And search Artemis Project to find out more about the work Caitlin does supporting students through their education. 

What do we want from the moon? Are our feet faster than us? And what's Dr Karl's favourite flavour of milk? 

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. Got a question for Dr Karl - submit it here https://ab.co/askKarl

Is it bad to rub your eyes? What do birds get up to during migration? And which hair colour is the strongest? 

Zoe Kean answers these questions and more on triple j Mornings with Sam Lane. Got a question for Dr Karl - submit it here https://ab.co/askKarl

Do soap suds affect cleanliness? How does salt in the ocean form? How many mushrooms would it take to decompose a human body?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

Why do we go to space? How do you design a rocket? And what movie about space gets it most right?

Dr Karl and special guest Jaxon Liebeck answer these questions and more on triple j Mornings with Lucy Smith.

Are black holes really holes? How heavy is a dark star? And what happens when we're mindful?

Dr Karl and Dr Laura Driessen answer these questions and more on triple j Mornings with Lucy Smith. 

Does light travel forever? Why does the dancefloor get so sweaty? And can your friends match your freak?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

Why are chocolate and coffee the perfect pair? What's the point of having hairy feet? And how do you make the perfect frozen marg?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

Does a plucked hair grow back?  Why does nicotine suppress your appetite? And how high is the sky?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith

Doctors, here's a sneak peek of a brand new podcast co-hosted by Dr Karl.

Where is the centre of the universe? What would happen if the speed of light increased? And what is Dr Karl's favourite maternity fact?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

Would we die without dioxygen? Where did spiders come from? And can you learn to hack the cold?

Dr Karl and Zoe Kean (OAM!) answer these questions and more on triple j Mornings with Lucy Smith. 

Does Missy Higgins have geometrically impossible standards? How high do hot air balloons go? And how much is too much 'Sugar On My Tongue'?  

Dr Karl answers these questions and more in this special episode of Science with Dr Karl with Lucy Smith. 

What's the fastest way to cool down a room? How helpful is a stiff drink on a sick day? And is weeing in the shower good for you? 

Join Lucy, Dr Karl and special guests for a look back on some of our favourite questions from this year all about life hacks!

Does Halsey understand DNA properly? How long should we cryogenically freeze ourselves for? And can we learn how to remember everything?

Join Lucy, Dr Karl and special guests for a look back on some of our favourite questions from this year all about the human body!

How much can a black hole consume? Would anything happen if we all jumped at once? And which planet would have the best gigs?

Join Lucy, Dr Karl and special guests for a look back on some of our favourite questions from this year all about space!

What muscles are required for a yawn? How does jewellery affect our skin? And what's the connection between atoms and physical pain?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

How far into space could we hear the Js? What actually causes 'the runs'? And is drinking snow hydrating?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

Can you taste with just a sense of smell? Is it possible for your immune system to reset? And what causes period shits?

Dr Karl and Dr Theresa Larkin answer these questions and more on triple j Mornings with Lucy Smith. 

Where does all our energy go when we die? Why do humans laugh? And is rain water or tap water better for plant growth?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

Would an invisible person be blind? Can you have too much muscle? And who teaches bees how to make honey?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

What's the deal with Neil the Seal? Can you sniff a fart away? And what does sickness smell like?

Dr Karl and Zoe Kean answer these questions and more on triple j Mornings with Lucy Smith.

Is there a link between albedo and climate change? Are four-leaf clovers really that lucky? And could ants rule the world?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

How will the universe end? What makes weight lighter in the pool? And with enough helium, could we float?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

Do ants outweigh humans? Are we getting any more water on Earth? And why do dreams leave us on cliffhangers?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

What would happen to the universe if we could time travel? How fast does the earth move? And at what point does our brain switch from awake to asleep?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

Will trees adapt to climate change? What causes migraine auras? And what happens in your body when you quit vaping?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

How does boiling water affect tea? What is the instant smell from a packet of salt and vinegar chips? And how do carbohydrates and protein interact in our digestive system?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

What's the correlation between black holes and time travel? Do batteries weigh less when they are empty? Why do some people develop indigestion later in life?

Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.