What muscles are required for a yawn? How does jewellery affect our skin? And what's the connection between atoms and physical pain?

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

How far into space could we hear the Js? What actually causes 'the runs'? And is drinking snow hydrating?

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

Can you taste with just a sense of smell? Is it possible for your immune system to reset? And what causes period shits?

Dr Karl and Dr Theresa Larkin answer these questions and more on triple j Mornings with Lucy Smith. 

Where does all our energy go when we die? Why do humans laugh? And is rain water or tap water better for plant growth?

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

Would an invisible person be blind? Can you have too much muscle? And who teaches bees how to make honey?

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

What's the deal with Neil the Seal? Can you sniff a fart away? And what does sickness smell like?

Dr Karl and Zoe Kean answer these questions and more on triple j Mornings with Lucy Smith.

Is there a link between albedo and climate change? Are four-leaf clovers really that lucky? And could ants rule the world?

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

How will the universe end? What makes weight lighter in the pool? And with enough helium, could we float?

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

Do ants outweigh humans? Are we getting any more water on Earth? And why do dreams leave us on cliffhangers?

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

What would happen to the universe if we could time travel? How fast does the earth move? And at what point does our brain switch from awake to asleep?

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