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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.