Why is the sky blue during sunsets? What's outside the universe? What came before the dinosaurs?

Does baby oil amplify the sun's rays and give you worse sunburn? What's outside the circle of the universe? Does your internal sense of direction change between the southern and northern hemispheres?

What happens to your brain when you're dizzy? Why do I get goosebumps when I need to poo? Why does it feel weird when you lay on the opposite side of the bed?

Professor David Reilly joins Dr Karl to answer your questions about quantum computing, AI and nanoscience.

Where does the past go? How do we keep human biases out of Artificial Intelligence? Can quantum computing help us solve p=np?

Why am I so ticklish? Why is the human eye attracted to sparkly things? How come you can remember the start of a word but not the full one?

Why do you need to wee when you're in the shower? What happens when there's something on the 'tip of your tongue'?' Why do we pull faces when we cry?

Can snakes poison themselves with their own venom? Why do tattoos change colour after getting out of the shower? Does wearing black clothing attract more heat?

Dietitian Professor Clare Collins joins Dr Karl and Zan to answer all your food science related questions. Is naturally occurring sugar in fruit the same as processed sugar? Why do some people hate coriander? What are ketones and what role do they play in the diet?

Bill Nye joins Dr Karl and Zan to answer your burning science questions like: what would happen to the Earth if it stopped spinning? How does the vacuum of space exist? Why is beach sand hard or soft?