Episodes

• 2021

• The fourth dimension, rogue hairs, wild vegetables

  What is a stitch? Why do we grow random long hairs? Can we eat boogers? Dr Karl answers these questions and more, on triple j mornings with host Abby Butler.
  April 15, 2021

  39 min

• Doppelgängers, daylight savings, eye colour

  How long could we live without the sun? Why do my veins swell in the heat? When will Mars settlers be called Martians? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  April 8, 2021

  39 min

• Nose yoga, ice cubes, time travel

  Why don't plastic containers dry properly? Do ball sacks have tastebuds? Why did my glass door explode? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  April 1, 2021

  39 min

• Flood water, shopping trollies, cat purring

  Will Australia be underwater in the future? Could you cook a chicken with body heat? Why are electric kettles so loud? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  March 25, 2021

  40 min

• Ducks, body clocks, dinosaurs

  How does the brain deal with anxiety? Do ducks like the rain? Could you scream in space? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  March 18, 2021

  39 min

• Methane, artificial intelligence, pre-made meals

  Are there any new deserts? Why does being sick make me feel better? Does Autumn change the worlds oxygen levels? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  March 11, 2021

  39 min

• Overnight shifts, spider clouds, spit

  Do crystals absorb energy? Why does some poop float? Can a broken heart hurt you physically? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  March 4, 2021

  41 min

• Electric vehicles, body temperature, mowing

  Why does anxiety make my hands tingle? Why doesn't corn digest properly? Could we ever shift the axis of the earth? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  February 25, 2021

  41 min

• Public toilets, naked flames, tattoo pain

  What's the frame rate of our eyes? Does gut bacteria cause depression? What would happen if mosquitos became extinct? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  February 18, 2021

  40 min

• Birth control, sea urchins, auras

  Does a spoon keep champagne bubbly? Why do I cough when using an earbud? Why do animals sense disasters? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  February 11, 2021

  41 min

• Fog, weight training, artificial suns

  Why don't humans hibernate? What's the best way to hang washing? Why am I attracted to dark haired people? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  February 4, 2021

  40 min

• Rusty sunscreen, anti-depressant yawns, road bubbles

  Could one side of my mouth be dominant? What makes chilis so hot? Why do little bubbles form on the road after rain? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  January 28, 2021

  35 min

• Rainforests, grey hairs, tastebuds

  Could nightmares be genetic? Why does the weather affect my asthma? Can I outrun a giraffe? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  January 21, 2021

  39 min
• 2020

• Penguins, orgasms, flat earth

  Is the Earth flat? Why do penguins wobble when they have knees? What is the biological function of the female orgasm? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  December 17, 2020

  42 min

• Space magnets, asteroids, coral sex

  Do magnets work in outer space? What would happen if you opened a jar from space on Earth? Do germs have the ability to move on their own? Dr Karl is joined by Professor Geraint Lewis from The University of Sydney this week! answering all these questions and more, on triple j mornings with Lucy Smith.
  December 10, 2020

  38 min

• Twins, tapeworms, water divining

  How much force does it take to bite off a finger? Why is salt water so buoyant? Why do I get pleasure from cracking knuckles? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  December 3, 2020

  43 min

• Male nipples, climaxing, wrinkly fingers

  Do dogs have personalities? Can you compost vegan poop? Why do lizard tails wiggle after falling off? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  November 26, 2020

  38 min

• Eye floaters, rescue bees, drinking blood

  Why do I always hiccup and burp at the same time? Do birds recognise their own reflection? Why does my dog steal my socks? Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  November 19, 2020

  38 min

• Science with Dr Karl: 2020 NAIDOC week special

  What is Mars's role in Indigenous astronomy? Why are snail trails shiny? How do extinct animals come back? Dr Karl answers these questions and more, on triple j mornings with Corey Tutt from Deadly Science, Karlie Noon from Sydney Observatory and host Lucy Smith.
  November 12, 2020

  41 min

• Moles, superstitions, saliva

  Why can I predict the rain? When's everything going back to normal? How did we draw maps before satellites?  Dr Karl answers these questions and more, on triple j mornings with host Lucy Smith.
  November 5, 2020

  41 min