Why are thorns on roses less sharp when they are dead? Is it true that oil on Earth is being slowly, but infinitely being replenished? Do painkillers really know how to target pain?

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

Rose thorns, oil, painkillers

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!

Science

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.

Planet-eating stars, Dreamtime astronomy and the Potato Radius

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.

Tick bites, dirty diamonds and the bacteria takeover

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.

Flushing etiquette, growing pains and heat vs temperature

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.

Cloning dinosaurs, inbreeding implications and the soft cheese crisis

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.

Rose thorns, oil, painkillers

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