

Dr Karl Podcast
triplej
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!
Episodes
Mentioned books

Apr 9, 2026 • 38min
Leech brains, animal instincts and echidna quirks
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

Apr 2, 2026 • 37min
Artemis II, decomposition and breast milk
A lively dive into Artemis II launch plans, trajectory and reentry concerns. Practical talk about spacecraft toilets, food and waste handling. Exploration of breast milk's healing and immune properties. Troubleshooting smelly compost and how fungi help decomposition. Why soap suds do not equal cleaning power and what keeps ocean salt mixed.

Mar 19, 2026 • 37min
Faster-than-light travel, the Van Allen Belt and AI space exploration
Jackson Liebeck, spacecraft systems engineer and former flight director for the Blue Ghost lunar mission, shares tales from rocket testing to lunar landings. He talks mission control pressures, Van Allen belt radiation tradeoffs, spacecraft design surprises and creative problem solving. They also explore faster-than-light concepts, AI aiding lunar operations and why a Moon base could change space logistics.

Mar 12, 2026 • 37min
Super voids, satellite noise and asteroid navigation
Dr Laura Driessen, astronomer who studies radio transients and cosmic structure. She discusses mysterious slow radio flashes and possible white dwarf origins. They explore supervoids and how multiwavelength maps reveal empty cosmic regions. Conversation covers satellite radio interference and techniques to mitigate it, plus how spacecraft safely cross the sparse asteroid belt.

Mar 5, 2026 • 37min
Morning vs. motion sickness, sunburnt eyes and colour blind dreams
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.

Feb 26, 2026 • 41min
Share house smells, sleeping mosquitoes and multiverse supercomputers
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.

Feb 19, 2026 • 38min
Synesthesia, lime cordial v. bacteria & fusion reactors
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

Feb 17, 2026 • 6min
The Challenger Legacy - new Dr Karl podcast
Doctors, here's a sneak peek of a brand new podcast co-hosted by Dr Karl.

Feb 5, 2026 • 38min
Murphy's Law, mouth ulcers and MSG
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.

Jan 29, 2026 • 42min
Human buoyancy, acclimatising and syncing periods
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.


