Imagine This

Latest Episodes:

How deep is the ocean? Oct 14, 2026

Show notes

Zaki and Micha want to know, how deep is the ocean? Fraser asks, why doesn’t the sun light up the bottom of the ocean? And Hudson and Reuben are wondering, why does the ocean look blue?

Yarrr! Climb aboard matey, Dr Nij and the kids are in search of treasure at the bottom of the sea…. But how deep does the ocean go?

Dive deep in our Scallywag Submersible with marine cartographer Dr Marji Puotinen. Together we’ll discover the many zones of the ocean and visit the deepest, darkest part of all – the Mariana Trench! Will we find our treasure or something else lurking below?

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, podcasts from your favourite characters like Bluey and Hey Duggee and plenty more of the best kids podcasts like Imagine This, Dino Dome and News Time. For all ages from 0–4-year-olds, 5–8-year-olds, 8–10-year-olds, tweens and teens. And you can watch our kids shows on ABC iview and on the ABC Kids and ABC Big Kids channels of YouTube kids.

How does paint get its colour? Oct 07, 2026

Show notes

Ben and Ingrid want to know, how is paint made? Grace asks, what is paint made of? And Yuki is wondering, how do colours get into paint?

We love to paint and get messy with all the colours of the rainbow! You can mix blue and yellow to make green, red and blue to make purple… but how did we get all these colours in the first place? Let’s visit our friend Jocelyn Evans. She’s a paintings conservator at the National Gallery of Australia – that’s like a doctor for paintings!

Disappear inside of a work of art with Nij and the kids to follow the history of paint and how people made all the colours of the rainbow!

How do ears work? Sep 30, 2026

Show notes

Tom and Mackenzie want to know, how do our ears work? And Harry asks, how are sounds made and how does it get to our ears?

Nij and the kids are rocking out at band practice and it’s getting pretty noisy! How are we making all this sound? And how is it getting inside our ears? Lucky Dr Viji Easwar has joined the band to help us ride the soundwaves and find out how hearing actually works! Surf’s up!

How is metal made? Sep 23, 2026

Show notes

Cash, Ben, Jonathan and Harriet all want to know, how is metal made? And Henry asks, why does metal feel colder than other stuff?

Hear ye, hear ye! Knight Nij is about to make his debut at the medieval fair until disaster strikes… His steel sword broke in half! He can’t fight dragons like this… We’re off to visit blacksmith and metallurgist Dr Matthew Humbert to see if he can help fix Nij’s sword and teach us how metal is made… Things are about to get hotter than a dragon’s mouth!

How does food turn into poo? Sep 16, 2026

Show notes

Bridie wants to know, how does food turns into poo? Sam asks, how is poo made? Nathan and Lachlan want to know why do we poo? And Ollie is wondering, why do tummies grumble?

Nij and the kids are at an All-You-Can-Eat Buffet! We’re having waffles and hot chips… Fruit salad and sushi bowls! Until a giant crashes the queue… Fi fi fo fum the buffet is closed... Now get in my tum!

With the help of research dietitian Dr Georgina Williams, we’re getting swallowed by a giant to follow the digestive journey of food into poo! Things are about to get messy….

Science Week: Why are worms good for the garden? Aug 19, 2026

Show notes

To celebrate Science Week we're unearthing a special episode of Gardening Australia Junior!

The theme of this year's Science Week is 'Seeds of Science: Nurturing knowledge for all'. They're not just talking about planting seeds in the ground. It’s about planting seeds of curiosity too! Every great scientific discovery starts with wondering about the world around us... Why is the sky blue? Why do apples fall from trees? What’s hiding underneath our feet?

Join Costa, Nij and the Gardening Australia Junior crew in learning all about the secret lives of worms.

FAN FAVE: How does the sun light up the world? Jul 22, 2026

Show notes

We're having so much fun listening back through your all-time favourite Imagine This episodes! This one sure was illuminating!

The Sun is hot and bright, it helps plants grow and keeps us warm. But did you know, the Sun is also a star? How come there are so many tiny, twinkling stars at night and just one sun lighting up the world in the day time? Let's blast off into outer space with Professor Lisa Harvey-Smith for a closer look at our closest star.

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

Keep questioning!

FAN FAVE: How are seeds made? Jul 15, 2026

Show notes

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!

FAN FAVE: How are rainbows made? Jul 08, 2026

Show notes

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

Keep questioning!

FAN FAVE: How do fish breathe underwater? Jul 01, 2026

Show notes

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.

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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