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.