Imagine This

Imagine This

Imagine This is a science podcast for the young and curious. Have you ever wondered how bees make honey? Or how do fish breathe underwater? Or, very importantly, where your poo goes when you flush it down the toilet? Imagine This is a series of puzzling science questions from inquisitive young minds. Our host, Dr Niraj Lal, chats to kids and Australia's leading academics, taking you on imaginative adventures to learn about the world around us and find the answers together. This podcast is suited to kids aged 4 and up, though all members of the family are sure to learn something!

Episodes

July 14, 2026 14 mins

We're digging through the archives and picking all your old faves. This one was no garden-variety adventure...

If plants come from seeds but seeds come from plants then how do you get a seed to start off with? Nij and the kids meet ecologist Professor Angela Moles for a bushwalk to find some answers... 

If you have a request or want to ask a new question... Drop us a line at imaginethis@abc.net.au

Keep questioning!

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We're looking back at some of your all-time favourite Imagine This episodes. Nij is the guest scientist and the kids take the lead in this colourful adventure to learn all about the science of rainbows...

We can see them after a sun shower... or the spray of the sprinkler... we can even sing them! But why can't we ever catch them? Nij shares the ingredients to make a rainbow in this special episode of Imagine This...

If you...

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The Imaginarium has been inundated with requests for some of your favourite episodes! Let's dive in...

Up here on land, we breathe air into our lungs but how do fish breathe underwater? Is there air in the sea? Do fish have lungs like us? Let’s head to the beach with Dr Nij to meet marine biologist Tooni Mahto and find out how fish and other sea creatures live underwater.   

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We've been spring cleaning the Imaginarium and have come across some old favourites! This golden oldie's a gas... literally!

Today we're talking about something that all of us do. They can be loud or soft, sometimes smelly and almost always funny. We're talking about fluffs, toots, air biscuits - yes, farts! - and why they come out of our bums. Join Professor Kourosh Kalantar-Zadeh as we shrink to fit inside his gas-smelling capsule...

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May 12, 2026 14 mins

Evie wants to know, "How is soil made?" 

Soil is everywhere but where does it come from? And why does it get treated like dirt?

Nij and the kids team up with Dr Samantha Grover from the Soil-Atmosphere-Anthroposphere Lab at RMIT University. Together they'll journey deep underground to learn all about the connections between soil, the environment, and people! 

For more great kids podcasts, download the free ABC listen app (Au...

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May 5, 2026 14 mins

Jamie wants to know, "What makes food spicy?" and Jacob asks, "Where does spice come from, how is it made and why does milk help?"

Let's follow the flavours that tickle our tastebuds with sensory scientist Professor Heather Smyth. Nij and the kids will learn all about how taste works and why spiciness packs such a punch!

For more great kids podcasts, download the free ABC listen app (Australia). There you’ll find more kids news...

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April 28, 2026 14 mins

Frankie and Timothy would like to know, "How do cars work?" 

Levi wants to know "How do different types of cars get power?"

Arija is curious "How do engines makes cars move?

Connor and Rory want to know, "How does a hybrid car work?"

And Sam wants to know, "How do vehicles go?"

Let's catch a ride with Professor Shawn Kook from the UNSW Engine Research Lab to learn about different types of engines, how they make wheels spin and cars...

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April 21, 2026 15 mins

Today's question was sent in by a LOT of you! Lizzie, Reuben, Archie, Mack and Ruth would like to know 'How do babies grow in a mummy's tummy?', Luana wants to know "Why do babies have blood on them when they're born?" and Grayson and Mackenzie want to know, 'How are babies really made?"

Follow Nij and the kids along with Professor Tu'uhevaha Kaitu'u-Lino as we imagine ourselves inside a uterus to see how babies grow inside the body...

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April 14, 2026 13 mins

We often think of yawning as something that happens when we're tired but the answer is much more mysterious. Nij and the kids meet Dr Kathleen Maddison at the Centre for Sleep Science for an adventure that starts all the way back in caveman times! 

For more great kids podcasts, download the free ABC listen app (Australia). There you’ll find more kids news podcasts, educational children’s stories and storytelling, po...

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We all know it’s important to use sunscreen in the hot Australian sun, but what exactly is sunscreen? And how does it work? Nij and the kids are joined by dermatologist Professor Pablo Fernández-Peñas for a slippery, summery and sparkling journey.

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December 2, 2025 13 mins

It's time to get nosy as we answer: What is snot? What are boogers? How is snot made and why do we have it? Nij and the kids join Associate Professor Kim Murphy on a slimy slip and slide through some giant nostrils.

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The grass is wet, but there’s been no rain, and the skies are clear... What explains the dampness covering everything on a cool morning? It's called dew! 

Meteorologist and ABC weather presenter Nate Byrne joins Nij and the kids to explain what exactly dew is, and where it comes from. 

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November 18, 2025 14 mins

Nij is out of fridge magnets and discovers they can't be replaced by just any piece of metal. What gives magnets their power to pull and push, and how do they stick to things? Nij and the kids get the answer from physicist Dr Cathy Foley, who explains how magnets work and why they're so special.

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November 11, 2025 12 mins

Nij has nits! But what are nits, and why do they make us itch? Medical entomologist Cameron Webb and the kids comb through Nij's head for a close-up look.

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Imagine This host Dr Nij joins Costa and the Gardening Australia Junior crew to find out why worms are so good for the garden.

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August 12, 2025 10 mins

To celebrate Science Week, we're heading back to space with Dr Kirsten Banks to learn about something very powerful and mysterious.... Black holes! 

We recommend listening to How are stars made? first before listening to this bonus episode. 

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June 3, 2025 15 mins

Twinkle twinkle, little star, how I wonder what you are…. No, really – what are stars made of and how did they get all the way up there in the sky? Let’s find out more with astrophysicist, Dr Kirsten Banks! Get ready to blast off in 5, 4, 3, 2 1!

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May 27, 2025 14 mins

If you don’t drink water, urine trouble! It’s a wee-lly important thing to stay healthy. So how do our bodies turn this clear water into yellow pee? Nij and the kids meet Dr Sradha Kotwal to follow the journey through our bodies from water to wee!

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May 20, 2025 14 mins

We see glass every day, we see right through it! It’s in our windows and our fridges, our cars and our devices… But how do you make all this hard, clear stuff? Pack your bags, we’re off to Ancient Egypt to find the answers!

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Some days we can feel happy and other times we can feel sad or frustrated, or downright angry! Where do all these different feelings come from and why do we feel them? Nij and the kids meet Dr Pete Koval at the F.E.E.L. lab to learn more…

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