Dr Karl on triplej

Dr Karl on triplej


Join Dr Karl Kruszelnicki, Zan Rowe and their scientific guests, with a bunch of curious triplej listeners for a weekly injection of science, myth-bashing and answers! Thursdays from 11am EST.


Seeing the same colours, downward bubbles, space elevators  

Dr Karl and Zan are joined by Bubble Physicist Dr Helen Czersky to answer your questions like: why stout bubbles go down, whether or not we'll ever see space elevators and whether we all see the same colours.

Spaghettification, multiverses, the end of space  

Dr Karl and Zan are joined by Astrophysicist Professor Lisa Harvey-Smith to answer your star based questions like: Where does space end? Is it possible there are multiple universes? What is Spaghettification?

Double rainbows, tidal waves and lightning strikes  

Dr Karl and Zan are joined by Meteorologist Nate Byrne to answer your weather based questions like why injuries flare up when it rains, what keeps clouds in the sky and whether you could survive a tidal wave.

Soul weight, head eggs, e-cigarettes  

Why do you get an egg on your head when it gets hit? How much does a soul weigh? Why do you wake up with a song stuck in your head?

Space babies, empathetic pain, clean coal  

Can you conceive a child in space? How far away are we from teleportation? Is there such a thing as clean coal?

Feeling tingly, tree lifespan, migraine  

Can you talk yourself out of a migraine? Why do we cry? Can a tree live forever? What causes the tingly feeling you get when you get excited, or inspired?

Nutrition Professor Clare Collins  

Professor Claire Collins answers: What happens if you cut out all sugar? Would diabetics benefit from a vegan diet? Why does fruit give you the runs?

The sneeze smell, hologram universe, pack animal behaviour  

Is the universe a hologram? Why do adolescent men act more like pack animals? Why does a bee come in and out of my house and land in the exact spot each time?

Un-poppable popcorn, the colour of lightning, tickling  

Why are we ticklish? Why do some pop-corns never pop in a saucepan, or microwave? If you're drunk and you have a blood transfusion, would you become sober?

Itchy skin, moths and lights, touch screen and cold fingers  

Why are moths attracted to lights? What exactly is happening on my skin when I feel itchy? Why does my cold finger not work as well on a phone touch-screen?

Wanting to hurt cute things, stomach grumbles, lost voices  

Why do I want to hurt cute things? Why does a stomach grumble when it's hungry? What physically happens when you lose your voice?

Underwater farts, cosmic strings, snake knots  

Does a fart smell worse if it happens underwater? Would a snake be able to untie itself from a knot? What are cosmic strings?

'Skinny fat', fasting for weight loss, feeling full  

With special guest Ruben Meerman the Surfing Scientist!Why do people use the ketogenic diet for weight loss? Is intermittent fasting good for weight loss? What happens if you don't eat ANY fruit and veg?

Foggy glasses, pins and needles, the colour of clouds  

What gives clouds their colours? Why does only one side of my glasses fog up when I put them on? What causes pins and needles?

Pulling sour faces, animal accents, body water and the moon  

Does the moon affect the water in our bodies? Do animals have accents? Why does your face screw up when you eat sour things?

Traffic forming, spiders' webs, the purpose of tears  

What are the purpose of tears? Can spiders get caught in other spiders webs? How does traffic form on the freeway?

Parallel universes, death rays, time travel  

Is it possible to travel back in time to visit yourself? If the human species was shrunk, would we be a more sustainable species? Do parallel universes exist?

The Big Bang, blocked nostrils, closing eyes  

What caused the big bang? Why is it that when you say a word multiple times you forget its meaning? When you have a cold, why can only one nostril get blocked?

Drinking rusty water, re-animation, dying from heart break  

How many sports drinks is too many? Can you die of heart break? Is it possible to re-animate a dead body?

Chemotherapy and hair, sharks and magnets!  

Why does hand colour/ type change after chemo? How long does it take your body to adjust to a new time zone? What do sharks think about magnets?

Video player is in betaClose