Dr Karl Podcast

How does our body tell us we're thirsty? Do trees get cancer? And if the entire world flooded, could we all turn into fish people?   Bianca Nogrady answers these questions and more on triple j Mornings with Lucy Smith.

Where is wind going? Are ants able to predict rain? And why do sportspeople train at higher altitudes? Bianca Nogrady answers these questions and more on triple j Mornings with Lucy Smith.

Why does the contraceptive pill affect your dreams? Can your pet watch you weld? And is there a science behind the tension shifting in a room? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

What are the most effective ways to decrease exposure to microplastics? Is there a link between planet alignment and weather patterns? And what would happen if an asteroid hit the earth? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

What’s the next step in human evolution? Are there any land animals that produce electricity? How do bees select their flowers? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

What's the difference between AM and FM radio? Why does plucking our eyebrows make us sneeze? And how do you stop a fart from following you into the next room? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Is time an illusion? Do our brains lie to us after a late-night shift? And why did our bodies decide we don't need hairy feet? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

What would it take to shift the Earth's axis? How does the body process radiation from the sun? And is memory an innate skill or something we learn? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

What invasive species tastes the best? What would happen if we eradicated feral cats? And how does your body respond when you start eating meat again after years of being vegetarian?  Dr Karl and special guest Professor Phill Cassey answer these questions and more on triple j Mornings with Lucy Smith.

How long can humans survive without food? Why does coffee taste different when it goes cold? And will quantum computing and AI be the end of humanity?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

In the last episode of our three-part summer series, we’ll be looking back at your best questions about the human body. We’ll delve into questions like does drinking apple cider vinegar improve gut health? How effective are collagen supplements? And what happens if you hold your urine in for too long?

In this episode of A Summer of Science, we’ll be looking back at your best questions about the future. We’ll dive into how reintroducing extinct animals might shape our future, if robots will take our jobs, and what cool burning is and the role it might play in an increasingly warmer climate.

Over the next three weeks, we’ll be looking back at your best questions of 2024 and we’re kicking things off with space.  In this episode we’ll answer things like is there any science behind astrology? Can you have sex in space? And do aliens really exist?

Does your blood type impact your dietary requirements? Is blue green algae safe to swim in? And why are there so many cicadas around this year?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Can we really hear the ocean in a seashell? What is considered the "right" amount of water? And why do our ears pop when we have the windows down while driving? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Does intermittent fasting affect your metabolism? Why do you feel nerves in your gut? And could hay fever reignite food allergies? Dr Karl and special guest Dr Clare Collins answer these questions and more on triple j Mornings with Lucy Smith.

Why do we have eyebrows? Is there a way to predict the future of evolution in humans? And what would our doctors ask Charles Darwin at a dinner party?  Dr Karl and special guest Zoe Kean answer these questions and more on triple j Mornings with Lucy Smith.

How does alcohol affect your sleep? Can energy be destroyed? And how do snakes stay so clean? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

What impact would living on Mars have on our bodies? Could we ever have 'Earth' on our identification? And how are the astronauts stuck on the International Space Station going? Dr Karl and special guest Dr Adrian Brown answer these questions and more on triple j Mornings with Lucy Smith.

Is math a human invention or something we discovered? How many ways are there to count? And can math offer a solution to microplastics?  Dr Karl and special guest Matt Parker answer these questions and more on triple j Mornings with Lucy Smith.

How realistic are shark attacks in movies? Why are there no monkeys in Australia? And how important are breathing exercises?  Science communicators Zoe Kean and Ruben Meerman answer these questions and more on triple j Mornings with Lucy Smith.

Will humans ever evolve to be immune to cancer? How effective are shark bands for surfers? And are our dreams made of atoms?  Science communicators Zoe Kean and Ruben Meerman answer these questions and more on triple j Mornings with Lucy Smith.

Why do some people have a higher caffeine tolerance? How common is shingles in people under the age of 30? And why don’t any mammals have green fur?  Dr Karl answers these questions and more on triple j Mornings with Jordan Barr.

Do animals get jet lag? How do snakes dig holes if they have no arms? And what impact would the reintroduction of extinct animals have on existing species?  Dr Karl and special guest Dr Marissa Parrott answer these questions and more on triple j Mornings with Lucy Smith.

Why do I need to pee every time I get to my front door? How long could you survive in a car with just air conditioning? And does your sleep schedule matter as long as it's eight hours? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Are electric vehicles still better for the environment if you charge them with a non-renewable energy source? What happens if you hold your urine for too long? And can you get the physical symptoms of anxiety without feeling anxious?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

How much air pollution do space launches cause? Why don’t babies get bad breath in the morning? And is it true your immune system doesn’t know you have eyes?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Why does my Bluetooth speaker glitch when I'm using the microwave? Can fears be genetically passed down? And will there be another major evolutionary period for humans? Dr Karl answers these questions and more on triple j Mornings with Bec Charlwood.

How small does an animal need to be to survive a great fall? Is it safe to reheat tea or coffee in the microwave? And how are magnets made?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Are we really eating spiders in our sleep? Do bees have knees? Why are cockroaches so resilient? Dr Karl, Dr. Robert Puckett and Jess Ward-Jones  answer these questions and more on triple j Mornings with Lucy Smith.

Can AI rewrite its own software? How much water would we need to take to the moon to make it inhabitable? And are robots going to take our jobs? Dr Karl and special guest Dr Matt Agnew answer these questions and more on triple j Mornings with Lucy Smith.

Why are we seeing Olympic records in some sports but not others? Does cracking your fingers actually give you arthritis? And if someone ate a diet of only lavender, would their farts smell nice? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Are there more planets than grains of sand on earth? Does food go mouldy in space? And have we started training astronauts to visit Mars?  Dr Karl and special guest Katherine Bennell-Pegg answer these questions and more on triple j Mornings with Lucy Smith.

Is urine sterile enough to clean a wound? Why do our noses run so much in the cold? And can you change your sex drive? Dr Karl and Dr Naomi Koh Belic answer these questions and more on triple j Mornings with Lucy Smith.

Is height predetermined at birth? Could plants have memories? And when we die, is it more environmentally friendly to get cremated or buried?  Dr Karl and special guest Zoe Kean answer these questions and more on triple j Mornings with Lucy Smith.

How do some trees survive extreme bushfires? Where did AI begin? And what's the climate change issue that's not getting enough coverage? For this NAIDOC Week special, Dr Karl is joined by Tiahni Adamson to answer these questions and more on triple j Mornings with Lucy Smith.

Why does it become harder to learn things as we get older? If you injured yourself in space, would it hurt as much as it would on earth? And why does cheese taste better melted?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Can long term use of cannabis change your eye colour? Why do adults feel the cold more than kids? And what will the next stage of human evolution look like?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Why does our skin dry out more in winter? If you were born deaf and blind, how would you think? And is sparkling water just as hydrating as regular water?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

What role do genetics play in determining how smart someone will be? Why are rainbows always the same shape and colour? And where do the vitamins in fruit and vegetables come from? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

If all planets are stuck in the sun's gravitational pull, what stops them from being completely pulled into the sun? Does melting cheese change its nutritional value? And could we genetically modify before birth? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Can we harness the power of earthquakes? Why don't dogs have bellybuttons like us? And why tf do you sometimes see one little cloud in a clear sky? Dr Karl answers these questions and more, on triple j Mornings with Ruby Miles.

What kind of math formulas go into AI? What influences our biggest fears? And can humans acclimatise to every weather condition? Dr Karl and special guest Tom Crawford answer these questions and more, on triple j Mornings with Lucy Smith.

Can eating certain foods change the taste of bodily fluids? Why do I get congested after a night out drinking? And why does armpit hair stop growing at a certain length? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

What's actually happening when you get the wind knocked out of you? Why does swallowing combat yawning? And could we ever visualise someone else's pain? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

If the whole population stood in one spot and ran would the earth spin like a treadmill? What would happen if gravity didn’t exist? And are farts powerful enough to propel you in space? Dave from Glass Animals asks these questions and more on this bonus episode of Science with Dr Karl.

Why is it so dangerous to look directly at a solar eclipse? How do we know that all foods taste the same to every person? And the big question - do aliens exist?  Dr Karl and special guest, Kirsten Banks, answer these questions and more on triple j Mornings with Lucy Smith.

Why does my voice wobble when I have vulnerable conversations? Why does food taste different at different temperatures? And how do you grow seedless mandarins if they have no seeds? Dr Karl answers these questions and more on triple j Mornings with Bec Charlwood.

What impact does trauma have on your memory? Why do chillies burn your tongue and lips but not your throat? And could octopuses take over the world?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Why do some medications reduce your sex drive? Why do dogs bite their own tail? And if you were preparing for the end of the world, what is the one medication you would take with you? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

What is it about beans that make us fart? Why do we lose muscle so quickly? How does a drink's temperature impact its fizz? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Why do old people have such a distinctive smell? What would happen if gravity suddenly doubled? And why do my limbs always swell during a flight? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Is it possible to speed up or slow down the speed of sound? Will stars eventually become invisible to the naked eye? And what would happen if you took your space suit off in space? Dr Karl and special guest, Dr Laura Driessen, answers these questions and more on triple j Mornings with Lucy Smith.

What does space smell like? Is the youngest sibling technically more elite? And do bushfires burn at a lesser intensity when at higher altitudes? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Why does the sun feel hotter on certain days? What would happen if an astronaut sneezed inside his helmet while in space? And does drinking lots of water make you sweat more? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

How important are orgasms to our mental health? What would happen if the world stopped spinning? And would expired milk be safe to drink if you boiled it? Dr Karl answers these questions and more on triple j Mornings with Ash McGregor.

Does working out increase your sex drive? Should we be worried about seagulls eating too many chips? And how has a stingray who's had no contact with males for eight years become pregnant? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Can drinking apple cider vinegar improve gut health? Is it okay to put chicken in the fridge while it’s still hot? And how does the carnivore diet affect the body? Dr Karl and special guest, Professor Clare Collins, answers these questions and more on triple j Mornings with Lucy Smith.

Are we connected to all our muscles? Why do I get sleepy when I have passengers in my car? Does drinking alcohol through a straw get you drunk faster? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

How does a shark smell blood in water? Does jet lag feel worse when travelling east to west? Should we be worried about the bacteria between our toes?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Could you sunbathe on the moon? Does the atmosphere alter our vision? Does the earths magnetic field impact gravity? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Does sex impact sporting performance? What is antibiotic resistance? Should we give plastic trees the axe? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

How do we remove earwax safely? Why is it cold at the peak of a mountain if hot air rises? Why don't scars tan? Bianca Nogrady answers these questions and more on triple j Mornings with Lucy Smith.

Can thunder hurt you? Why is my skin sticky? Why do I have the exact same dream every night? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith.

Why do certain tracks make us cry? How can a song take you back to a specific moment in time? What influences your music taste? Dr Karl & Dr Solange Glasser, Senior Lecturer in Music Psychology at the Melbourne Conservatorium of Music, answer these questions and more on triple j Mornings with Lucy Smith.

If I hold my nose when i sneeze, will my eyes pop out? Why can't we grow arms and legs back? Why do we cry? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith & Dr Theresa Larkin, Associate Professor at the University of Wollongong.

Where are all the Christmas beetles? Why do some mammals sweat and others don't? If the cells in our body get replaced every 7 years - why do our tattoos stay? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith.

Why do weeds grow faster than other plants? What happens when our body cramps? How do Bears hibernate? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith.

Do flies like humans more than poop? How is dark energy created? Will masks change the evolution of our face? Dr Karl answers these questions and more, on triple j Mornings with Lucy Smith.

Could we adapt to the climate on Mars? What is system inertia? How scientifically accurate is the 2015 film 'The Martian'? Our special guest this week is Dr Adrian Brown from NASA's Jet Propulsion Laboratory. He and Dr Karl answer these questions and more, on triple j Mornings with Lucy Smith.

Why do insects bite me and not my partner? What impact do wind farms have on marine life? How do underwater noises effect dolphins? Our special guest this week is Dr David Wachenfeld from the Australian Institute of Marine Science. He and Dr Karl answer these questions and more, on triple j Mornings with Lucy Smith.

Why do we itch at random times? Will mining on the moon affect Earth? How do tracking dogs pick up people's scent? Dr Karl answers these questions and more, on triple j Mornings with guest host Ash McGregor.

What causes colours in sunsets? Why can some people spin their eyes really fast? How much pollution is being emitted when a car sits at traffic lights? Dr Karl answers these questions and more, on triple j Mornings with guest host Pip Rasmussen.

Dr Lucy and Dr Karl are joined by special guest astrophysicist Professor Geraint Lewis to answer all your science questions inspired by movies! What's the most accurate time travel movie? How fast do you need to move to dodge bullets? When will we get hoverboards?

Can Metalcore clear your throat? Can you make alcohol out of paper? Why is the ocean salty? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

What part of our nose do we use to smell? Will climate change effect evolution? Can you re-catch the sickness you gave to someone else? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

Where are we at with time travel? How come male seahorses give birth? Is it quicker to go up the stairs two steps at a time? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

Can you burn more calories if you sing while exercising? What happens when your ears pop? How beneficial is pre-workout? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

Will another species evolve from humans? Is Jupiter a solid or a gas? If chickens eat redback spiders, do their eggs become poisonous?  Dr Karl answers these questions and more, with guest science writer Zoe Kean and guest host Ash McGregor!

Do we have a new planet in our solar system? How does asparagopsis decrease methane gas from live stock? Can plants hear certain frequencies? Dr Karl, Tiahni Adamson and Peter Tuthill answers these questions and more, on triple j Mornings with host Lucy Smith.

Why are bubbles round? Is my vacuum cleaner haunted? Why do we facepalm?  Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

How do you measure the size of a galaxy? Will AI answer all the paradoxes in the world? How many times could you wrap your intestines around the globe? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

How are bulls so toned if they only eat grass? How do astronauts navigate in space? Can you fart and sneeze at the same time? Dr Karl answers these questions and more, on triple j Mornings with guest host Ash McGregor.

How come reptiles can bask in the sun and not get sunburnt? Why does pasta taste better as leftovers? What's the best way to clean grease? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

What does a mirror see when it looks in a mirror? How old can Sharks be? Are Sea levels equal? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

How does First Nations Astronomy differ? How do Wombats clean their pouch? How can we trick our memory? Dr Karl, Corey Tutt and Krystal De Napoli answers these questions and more, on triple j Mornings with host Lucy Smith.

Why do some people feel the cold more than others? What state is electricity? Where does all the sweat, bevvies and yucky stuff go after a music festival? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

Why do the deceased still get goosebumps? Can you smell sickness? And you'll meet, the Rainbow Chasers. Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

Where did snakes evolve from? Is it possible to be at a standstill in the universe? Could a human head survive if detached from the body? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

How much of the Ocean is undiscovered? Can our body become immune to Cold & Flu tablets? What on earth is Anti-matter?! Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

How do earthquakes work in Australia? How do testosterone levels affect our body? Why do we need to poo after coffee? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

Why do we close our eyes when we kiss? Where’s the best heating position in the microwave? How does alcohol breath testing work? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

Why do we crave something sweet after dinner? Can supplements really affect our metabolism speed? Does cooking food affect the use by date? Dr Karl and special guest, Clare Collins, answers these questions and more, on triple j Mornings with host Lucy Smith.

Can our hearts sync to the music we're listening to? What's the speed of our nervous system? Can helicopters fly in space? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

Do all living things on earth sleep? Which alcohol is the worst for you? Does time ever skip a beat? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

Why does you voice get deeper when you're sick? Can a solar flare scorch the Earth? How did Axolotls evolve? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

Do flies experience time quicker? Why can some people nap and others can't? How do antibiotics work? Dr Karl answers these questions and more, on triple j Mornings with host Lucy Smith.

How Does Grass Spread? Why Do We Get Snotty In Winter? Should We Worm Ourselves Often? Bianca Nogrady answers these questions and more, on triple j Mornings with host Lucy Smith.

What would Dinosaurs taste like? Do dogs recognise their own breed? Why do kids get more nosebleeds than adults? Science writer Zoe Kean & Naomi Koh Belic answers these questions and more, on triple j Mornings with host Lucy Smith.