Why is the sky Blue?

Why do boiled eggs explode in the microwave?

Why are some planets called 'Gas Giants'?

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

How do we create blood?

Do animals have a sense of humour?

Do birds like flying?

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

Can you catch a ride on a comet?

Why does coffee work some mornings and not others?

How do trees produce Oxygen?

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

What's the difference between a virus and bacteria?

Do ants feel hot water?

What would happen if everyone started eating a plant based diet?

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

When you lose weight, where does it go?

Why does the shower steam when the water isn't boiling?

Are bees loyal to one hive?

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

Former NASA astronaut & deep sea explorer Kathryn Sullivan is our special guest today, answering all your space/ocean questions with Dr Karl.

Has the ocean always been salty?

Can we turn lead to gold?

Is there any science behind star signs?

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

Where does dust come from ?

Have we measured the speed of thought?

Is there science behind the 5 second rule ?

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

Is choccy milk the best post-workout beverage?

Why aren't we disgusted by our own body odour?

If someone is blind from birth, can they dream?

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

Could you last on a deserted island, Tom Hanks style?

Are bananas actually healthy?

Is my vegetarian diet affecting my PCOS?

Dr Karl answers these questions and more on triple j Mornings, with host Lucy Smith and Professor Clare Collins from the University of Newcastle