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Let's Dive In

RTÉjr

Let's Dive In

Join Phil and Julie on their adventures as they dive in to children’s questions on this charming little podcast about life, the universe and everything in it. Whether it’s about planets, farts, emotions or even pirates, you’ll be amazed, astonished and intrigued as Julie and Phil don’t just answer your questions, they’ll set up experiments, speak to experts and take you down a rabbit hole to discover new things. Who knows

There are 37 episodes
© RTÉjr Episodes: 37 Ages: 6-10, 11plus

Episodes
The most recent appears first.

  • S4 Episode 5 – Woah Nelly! What’s your birthday?

    00:13:18 5 December 2025 Listened

    // How do you tell a horses age? Phil and Julie discover how vets read teeth, hooks and wear patterns, and explore record-breaking long-lived animals in this fun, fact-packed episode. //

  • S4 Episode 4 – What a spectacle! How do glasses help us see?

    00:13:56 28 November 2025 Listened

    // How do glasses and contact lenses help us see? With help from real optometrists, Phil and Julie explore eye shapes, “pancake” lenses, and why natural light keeps vision healthy. //

  • S4 Episode 3 - How so sleepy, Mr Hedgehog?

    00:11:20 19 November 2025 Listened

    // How do hedgehogs survive months of hibernation? Collie Ennis tells Phil & Julie how heart rate, body temperature, and stored fat keep these tiny mammals alive all winter. //

  • S4 Episode 2 – How come heavy trees can stay standing?

    00:11:26 14 November 2025 Listened

    // How do massive trees stay upright? Nick from Redwood Trees talks about roots, pith wood, and flexible fibres let them sway in wind without falling. //

  • S4 Episode 1 – How do engines work?

    00:09:18 12 November 2025 Listened

    // Phil & Julie explain how car engines turn fuel into movement, from tiny explosions to electric motors, with fun, science, and plenty of laughs. //

  • S3 Episode 10 - Telescopes in space

    00:16:50 9 February 2023 Listened

    // Julie & Phil journey into space with Astronaut Bruce Melnick to find out how the biggest telescopes get up there, and why they’re up there in the first place. //

  • S3 Episode 9 - What is blood and what is it good for?

    00:14:26 2 February 2023 Listened

    // Dive into your blood with Julie and Phil and paediatrician Dr. Cilian Ó Maoldomhnaigh to find out how important it really is. //

  • S3 Episode 8 - What happens if you fall into a Black Hole?

    00:13:03 26 January 2023 Listened

    // Alan Foster joins Phil and Julie from Antarctica once more to explain what might happen if you fell into the gravitational pull of a dying star. Who likes spaghetti? //

  • S3 Episode 7 – Why are insects so important?

    00:13:09 19 January 2023 Listened

    // Julie and Phil join forces once more with Critter Shed bug expert Collie Ennis to find out why these tiny creatures are of such huge importance. //

  • S3 Episode 6 – What happens if the sun explodes?

    00:13:06 12 January 2023 Listened

    // 10 year old Bobby asks a catastrophic question but Phil and Julie ask scientist Alan Foster for a detailed and somewhat reassuring answer. Because he’s just spent 9 months in Antarctica, 6 months of that without any sun. //

  • S3 Episode 5 - How does a snail grow its shell?

    00:12:03 15 December 2022 Listened

    // Julie and Phil join forces with Critter expert Collie Ennis to find out how snails grow their shells. //

  • S3 Episode 4 - What are memories?

    00:11:19 8 December 2022 Listened

    // Julie and Phil speak with memory expert Ciara Greene to find out where and how memories are made in the brain. //

  • S3 Episode 3 - How many organs can you live without?

    00:10:58 1 December 2022 Listened

    // Julie and Phil dive into the human body with Tissue Handling Technician Hannah McGivern to find out how many organs you can live without. //

  • S3 Episode 2 - What time is it on the International Space Station?

    00:11:21 24 November 2022 Listened

    // Julie and Phil welcome retired NASA astronaut Bruce Melnick back to the show to talk about the time in space. //

  • S3 Episode 1 - Why do animals make noises and not talk like humans?

    00:12:49 17 November 2022 Listened

    // Julie and Phil talk with Simon Watt to find out what noise-making kits different animals have. //

  • We're back!

    00:00:51 16 November 2022 Listened

    // The podcast returns for Science Week 22 with 10 inspirational, investigational and altogether illuminating new episodes. Starts Thursday 17th November //

  • S2 Episode 10 - What is science?

    00:23:28 11 November 2021 Listened

    // Our bold presenters dive in to science itself! To explore what science and scientific research are with contributors from across the series. //

  • S2 Episode 9 - What are contrails?

    00:18:05 4 November 2021 Listened

    // Julie and Phil join Red Arrows pilot Nick Critchell to find out that jet planes have magical powers like Elsa from Frozen! //

  • S2 Episode 8 - People Colours, and why don’t we have stripes?

    00:25:11 27 October 2021 Listened

    // Why are we all different colours? And why aren't we stripy or spotty like the other animals? Julie and Phil dive in! //

  • S2 Episode 7 – Are there different types of water?

    00:23:41 21 October 2021 Listened

    // Barring earwax, for the first time Julie and Phil can actually dive into this topic with Phil’s Dad, Brian, to talk about how drinking water makes it to our taps. And a lot more splashy goodness. //

  • S2 Episode 6 - Elbow deep in earwax

    00:22:27 14 October 2021 Listened

    // Julie and Phil speak to two audiologists to find out what earwax is, what its for, and whether your ears sneeze in order to get it out! //

  • S2 Episode 5 - How did the giraffe get such a long neck?

    00:23:18 7 October 2021 Listened

    // To answer a question from 7 year old Ben, Julie and Phil speak to a real life Tarzan about giraffes and their long necks, and to zookeeper Tom about how to look after giraffes. //

  • S2 Episode 4 - Why are there no wild snakes in Ireland?

    00:20:23 30 September 2021 Listened

    // Julie and Phil meet Critter Shed Head Honcho Collie Ennis to find out why this tube-of-crisps shaped animal isn’t native to Ireland, and why it’s such a great predator. //

  • S2 Episode 3 - Suncream in space with Astronaut Bruce Melnick

    00:29:46 23 September 2021 Listened

    // Phil and Julie launch into space with a real live astronaut and a satellite engineer to find out if astronauts, and satellites, wear suncream up in space. //

  • S2 Episode 2 - The fart should be respected

    00:25:32 16 September 2021 Listened

    // Join Phil and Julie as they Dive In to your mouth and follow your dinner to see how it gets turned into farts! //

  • S2 Episode 1 – Why do tadpoles blow bubbles?

    00:21:10 9 September 2021 Listened

    // Julie and Phil are joined by Kurt Schwenk, a biologist at the University of Connecticut in the USA to dive in to find out how tadpoles breathe. //

  • Episode 10 – Spiders!

    00:27:03 25 January 2021 Listened

    // Alice and Florence caught a wolf spider in their house, and asked why do spiders have 8 eyes, and we only have two? Julie and Phil met Collie Ennis of the Critter Shed to find out. //

  • Episode 9 – Why do leaves fall at different times?

    00:23:52 18 January 2021 Listened

    // Nova asked a tricky question about trees so Phil and Julie find an expert arborist, Nick Rose who answers it and so much more. Plus, an experiment for you to do at home. //

  • Episode 8 - Telescope

    00:18:02 11 January 2021 Listened

    // How far can you see with a telescope? Julie and Phil are joined by Space Pirate Lana to find out. //

  • 07 – Oh Christmas Tree!

    00:17:13 21 December 2020 Listened

    // In a festive special, Phil and Julie meet an arborist who knows all there is to know about trees. And, in this particular episode, those green spiky ones we all have in our corners right now! //

  • Episode Six - Why is the sea salty?

    00:27:24 14 December 2020 Listened

    // Phil and Julie literally dive in to the Southern Ocean with oceanographer Nick up in Norway to find out. //

  • Episode 5 - Walking on Jupiter

    00:18:57 7 December 2020 Listened

    // Can you walk on Jupiter? Julie and Phil Dive right to the centre of the giant planet to find out. //

  • Episode 4 - Heart pump

    00:22:16 30 November 2020 Listened

    // Why does the heart pump? Phil and Julie take a trip into the heart to find out why and how it needs to keep beating. //

  • Episode 3 - Colours

    00:16:11 23 November 2020 Listened

    // Is black a colour, or is white? The kids can’t agree so Phil and Julie try different experiments with paints and lasers to find out! //

  • Episode 2 - Explosions!

    00:23:02 16 November 2020 Listened

    // How do scientists (and pirates) make explosions? Shipmates Julie and Phil are joined by a special guest as they make tiny rockets and slow burning fuses. //

  • Episode 1 - Why do you talk?

    00:15:05 9 November 2020 Listened

    // Julie and Phil have a fun-filled adventure into the larynx as they find out how we talk, but also why! Expect baby noises, cats and to make some silly sounds (and faces!). //

  • Introducing... Let's Dive In

    00:00:55 2 November 2020 Listened

    // Phil and Julie dive in to children’s questions about life, the universe and everything in it. Whether it’s about planets, farts, emotions or even pirates, you’ll be amazed, astonished and intrigued as they set up experiments, speak to experts and take you down… //

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