Why do we have eyebrows? Is there a way to predict the future of evolution in humans? And what would our doctors ask Charles Darwin at a dinner party?  Dr Karl and special guest Zoe Kean answer these questions and more on triple j Mornings with Lucy Smith. 

How does alcohol affect your sleep? Can energy be destroyed? And how do snakes stay so clean? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

What impact would living on Mars have on our bodies? Could we ever have 'Earth' on our identification? And how are the astronauts stuck on the International Space Station going? Dr Karl and special guest Dr Adrian Brown answer these questions and more on triple j Mornings with Lucy Smith. 

Is math a human invention or something we discovered? How many ways are there to count? And can math offer a solution to microplastics?  Dr Karl and special guest Matt Parker answer these questions and more on triple j Mornings with Lucy Smith. 

How realistic are shark attacks in movies? Why are there no monkeys in Australia? And how important are breathing exercises?  Science communicators Zoe Kean and Ruben Meerman answer these questions and more on triple j Mornings with Lucy Smith. 

Will humans ever evolve to be immune to cancer? How effective are shark bands for surfers? And are our dreams made of atoms?  Science communicators Zoe Kean and Ruben Meerman answer these questions and more on triple j Mornings with Lucy Smith. 

Why do some people have a higher caffeine tolerance? How common is shingles in people under the age of 30? And why don’t any mammals have green fur?  Dr Karl answers these questions and more on triple j Mornings with Jordan Barr. 

Do animals get jet lag? How do snakes dig holes if they have no arms? And what impact would the reintroduction of extinct animals have on existing species?  Dr Karl and special guest Dr Marissa Parrott answer these questions and more on triple j Mornings with Lucy Smith.

Why do I need to pee every time I get to my front door? How long could you survive in a car with just air conditioning? And does your sleep schedule matter as long as it's eight hours? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

Are electric vehicles still better for the environment if you charge them with a non-renewable energy source? What happens if you hold your urine for too long? And can you get the physical symptoms of anxiety without feeling anxious?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

How much air pollution do space launches cause? Why don’t babies get bad breath in the morning? And is it true your immune system doesn’t know you have eyes?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith. 

Why does my Bluetooth speaker glitch when I'm using the microwave? Can fears be genetically passed down? And will there be another major evolutionary period for humans? Dr Karl answers these questions and more on triple j Mornings with Bec Charlwood.

How small does an animal need to be to survive a great fall? Is it safe to reheat tea or coffee in the microwave? And how are magnets made?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Are we really eating spiders in our sleep? Do bees have knees? Why are cockroaches so resilient? Dr Karl, Dr. Robert Puckett and Jess Ward-Jones  answer these questions and more on triple j Mornings with Lucy Smith.

Can AI rewrite its own software? How much water would we need to take to the moon to make it inhabitable? And are robots going to take our jobs? Dr Karl and special guest Dr Matt Agnew answer these questions and more on triple j Mornings with Lucy Smith.

Why are we seeing Olympic records in some sports but not others? Does cracking your fingers actually give you arthritis? And if someone ate a diet of only lavender, would their farts smell nice? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Are there more planets than grains of sand on earth? Does food go mouldy in space? And have we started training astronauts to visit Mars?  Dr Karl and special guest Katherine Bennell-Pegg answer these questions and more on triple j Mornings with Lucy Smith.

Is urine sterile enough to clean a wound? Why do our noses run so much in the cold? And can you change your sex drive? Dr Karl and Dr Naomi Koh Belic answer these questions and more on triple j Mornings with Lucy Smith.

Is height predetermined at birth? Could plants have memories? And when we die, is it more environmentally friendly to get cremated or buried?  Dr Karl and special guest Zoe Kean answer these questions and more on triple j Mornings with Lucy Smith.

How do some trees survive extreme bushfires? Where did AI begin? And what's the climate change issue that's not getting enough coverage? For this NAIDOC Week special, Dr Karl is joined by Tiahni Adamson to answer these questions and more on triple j Mornings with Lucy Smith.

Why does it become harder to learn things as we get older? If you injured yourself in space, would it hurt as much as it would on earth? And why does cheese taste better melted?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Can long term use of cannabis change your eye colour? Why do adults feel the cold more than kids? And what will the next stage of human evolution look like?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

Why does our skin dry out more in winter? If you were born deaf and blind, how would you think? And is sparkling water just as hydrating as regular water?  Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.

What role do genetics play in determining how smart someone will be? Why are rainbows always the same shape and colour? And where do the vitamins in fruit and vegetables come from? Dr Karl answers these questions and more on triple j Mornings with Lucy Smith.