What's the fastest way to cool down a room? How helpful is a stiff drink on a sick day? And is weeing in the shower good for you?  Join Lucy, Dr Karl and special guests for a look back on some of our favourite questions from this year all about life hacks!

Does Halsey understand DNA properly? How long should we cryogenically freeze ourselves for? And can we learn how to remember everything? Join Lucy, Dr Karl and special guests for a look back on some of our favourite questions from this year all about the human body!

How much can a black hole consume? Would anything happen if we all jumped at once? And which planet would have the best gigs? Join Lucy, Dr Karl and special guests for a look back on some of our favourite questions from this year all about space!

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. 

Will trees adapt to climate change? What causes migraine auras? And what happens in your body when you quit vaping? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

How does boiling water affect tea? What is the instant smell from a packet of salt and vinegar chips? And how do carbohydrates and protein interact in our digestive system? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

What's the correlation between black holes and time travel? Do batteries weigh less when they are empty? Why do some people develop indigestion later in life? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

Should you really be weeing on your lemon tree? How close are we to finding proof of life on Mars? And what would happen to a helium balloon in zero gravity? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

It turns out, you have A LOT of science (and not-science) questions for Dr. Karl - and he's going to answer them!

What is the science behind Deja-Vu? Do we all see the same colours? Does cotton cause indigestion? Dr Karl answers these questions and more on triple j Mornings with Jaimee Taylor-Nielsen.

It turns out, you have A LOT of science (and not-science) questions for Dr. Karl - and he's going to answer them!