Sleep Tight Science - A Bedtime Science Show For Kids
Sleep Tight Science is a bedtime show that makes science accessible and enjoyable for the whole family. It covers science topics submitted by listeners, answering big questions about the natural world in a way that's simple enough for grown-ups to understand. Designed for curious young minds, the show uses big words to explain things like why we feel icky and how our legs help us move. Listeners can email their science questions to be featured in upcoming episodes.
Episodes
Why Is Jupiter’s Great Red Spot Red? 🪐
Éabha, who is six, and Fionn, who is eight, both wrote to us about the same thing: what is the red spot on Jupiter made of, and why is it red?
In this episode, we'll find out that the Great Red Spot is a storm so big that Earth could fit inside it, and that a spacecraft called Juno has measured how far down it reaches. We'll visit a laboratory where scientists turned a frozen chemical reddish ora
Why Do a Butterfly's Wings Match? 🦋
Luna and Elodie both noticed that the pattern on one side of a butterfly looks copied onto the other. In this episode, we'll find out that butterfly wings actually grow separately, following the same genetic instructions. Along the way, we'll meet two genes that scientists found by switching them off, and see why the match isn't always perfect.
Have a question of your own? We'd love for you
Why do cats rub against us? 🐈⬛
This episode’s question comes from Gabe, who lives in Des Moines, Iowa. Gabe wanted to know why cats rub against us. We will explore what a cat's scent glands are doing, why cats rub against each other, and what all of that might tell us about why your cat does the same thing to you.
Have a question of your own? We'd love for you to send it to us.
Sleep Tight!,
Sheryl & Clark
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How Does a Bee Choose a Flower? 🌼🐝
Ava, age 5, wants to know how bumblebees land on flowers. It turns out bees can sense something invisible in the air before they even touch down, and it took scientists years of clever experimenting to figure out what. We'll uncover the surprise hiding in our garden, then drift off to sleep as the bees head home for the night.
Have a question of your own? We'd love for you to send it to us.
Slee
Do Crows Really Hold a Grudge? 🐦⬛
Did you know a crow can remember your face? If it decides you're trouble, it can recognize you years later, and it might tell its friends. Even ones that never met you.Tonight's question comes from Anthony in Okemos, Michigan, who'd heard that crows hold grudges passed down through generations. We find out what a group of scientists in Seattle discovered when they tested it with rubber masks, and
Nocturnal Animals: How Can Anything See in the Dark? 🌙👀
Did you know the night is never really pitch dark, even with no moon out? There's always a little light, and some animals have eyes built to catch every bit of it.Tonight's question comes from Sage in Rochester, Minnesota, who wanted to know how nocturnal animals see in the dark. We'll find out why an animal's eyes sometimes seem to glow in a flashlight beam, and why an owl has to turn its whole h
Season 5 Finale: Everything Connects 🦏🦭🪲🧠🌌✨
What does a rhinoceros have in common with a flamingo, a hedgehog, and an eagle? Why does the same logic that put your brain in your head also explain how a crocodile lies in a river? And what does a dung beetle rolling dung across an African savanna have to do with a black hole? In this episode we 5 finale follow five threads that ran through all of season 5.Sleep Tight!, Sheryl
Do You Know About the Dung Beetle? 🪲
In this episode, before you drift off to sleep, we are going to learn all about the dung beetle. The dung beetle does a job nobody else wants. It eats dung, rolls dung, and raises its young inside dung. And while we think this is kind of stinky, we think it's a pretty extraordinary creature. You might too.Sleep Tight!, Sheryl & Clark❤️👂📖
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What Would Happen If You Fell Into a Black Hole? 🕳️
In this episode we are going to try to answer the question, What Would Happen If You Fell Into a Black Hole. And in trying to do so we are going learn all kinds of cool science.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts.
Sleep Tight!,
Sheryl & Clark
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Fun Facts: Meat-Eaters, Giants, and the Strangest Dinosaurs 🦕
In this episode we are going to share some facts about dinosaurs. We have other episodes on dinosaurs which you can find on our feed, but like you we still like to learn more about these fascinating creatures. The inspiration for the episode came from your questions and a new book full of many fun and fascinating facts about things that go roar - or at least we think went roar.
Grown-ups: we
Why Is Our Brain in Our Head? 🧠
In this episode, Shiying asked us why our brain is in our head and the answer took us back more than 500 million years to some of the earliest animals with a clear front end and back end. It's an interesting question, one which we don't often answer because we think the answer is obvious right up until the moment you actually try to answer it.
Grown-ups: we value your feedback. Our email and
Do you know about trees? 🌲 | New version!
Have you ever wondered about how trees grow? How can you tell how old they are? or Why are trees so important? In this episode we are going to talk about all these things. With the help of Craig Tupper, a forester in New Brunswick Canada, we are going to try and answer some questions about trees.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—ple
Do you know about jets? ✈️🛫🌍🛬 | Encore vroom
In this encore episode of Sleep Tight Science, we’re learning all about jets! What makes a jet different from other airplanes? How do jet engines work? And why are jets so fast? We’ll learn about the science of thrust, engines, and speed—and finish with some fun facts.
Sleep Tight!,
Sheryl & Clark
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📢 Send us your topics at hello@sleeptightscience.com
Do you know about mosquitoes? 🦟 | An encore that goes bzzzz
In this encore episode, we’ll explore the fascinating world of mosquitoes. You’ll learn what they are, why they buzz in our ears, why only some bite, and how they find us. We’ll also discover what happens after a bite, how mosquitoes grow up, and even a few surprising ways they help nature stay in balance.
Sleep Tight!,
Sheryl & Clark
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📢 Send us your topics at
Listener Questions: Stars, the Universe, and Deep Time ✨ ⭐
In this episode, four listeners ask four of the biggest questions in astronomy. We explore how the universe went from total darkness to its first stars, what a light-year really means, and what eventually happens to our sun.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts.
Sleep Tight!,
Sh
Listener Questions: Plants, Seeds, and the First Green Thing 🌱🍃
In this episode we have two questions from two six-year-olds living on opposite sides of the world. Nora Peng is six years old and lives in Hangzhou, China. Yumi is six years old and lives in Florida in the United States. Nora Peng wants to know where the very first seed on Earth came from. And Yumi wants to know how plants get their colour.
Grown-ups: we value your feedback. Our email and messa
Listener Questions: Chameleons, Octopuses, and Living Colour 🦎🐙
In this episode we have three super questions. One from Callum is 6 years old and lives in Manchester, England. He wants to know how chameleons change colour. Next, Albert who is 5 years old and lives in Maine, wants to know something very specific — can chameleons turn white? And Cora who is 8 years old and lives in the Pacific Northwest, wants to know how octopuses change colour.
Grown-ups: we
How Things Work: Why Is Air Invisible? 🌬️🔍
In this episode we are going to try and find out what air actually is and why it counts as real matter — because it does, even though it behaves as if it has nothing to prove. Then we'll look at what your eyes actually need in order to see something, and why air usually doesn't give them enough to work with. And then we'll go looking for clues — because invisible things leave evidence, if you know
Understanding Animals: Do You Know About the Capybara? 🦫
In this episode we are going to learn all about the Capybara, which has become famous for being extraordinarily calm, for sitting in hot springs, and for apparently allowing other animals to use it as a piece of furniture. Including birds, monkeys and small reptiles.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and th
Understanding Animals: Do You Know About the Eagle? 🦅
In this episode, we will learn all about eagles. We will discover how their eyes can spot a fish from three kilometres away, how their bodies are perfectly designed for hunting and flight, and why they build the largest nests of any North American bird. And we will talk about Clark's cookie habit.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send
Fun Facts: Bodies, Beasts, and the Big Beyond 🧠🐾🚀
In this episode were are returning to one of our favourite and fun formats; fun facts! We have three lists with three different topics. We'll start with some surprising facts about the human body. Then we'll learn about the animal kingdom, where things get a little strange. And then we'll zoom all the way out to outer space. We will be covering a lot of different things. Let us know if you like it
Understanding Animals: Do you know about crocodiles? 🐊
In this episode we are going to learn all about crocodile, and hopefully, if you are listening to this before bed, get a good nights rest too.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts.
Sleep Tight!,
Sheryl & Clark
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Understanding Animals: Do You Know About the Hedgehog? 🦔
In this episode, we learn about how hedgehog spines actually work, why hedgehogs can hunt venomous snakes without being hurt, what really happens to their body during hibernation, and a strange behaviour involving foam that scientists still can't fully explain.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts
Listener questions: The Science of Bioluminescence 🌊✨
In this episode, we're going to find out how bioluminescence works, where it lives, and what scientists have discovered by studying creatures that glow in the dark. We'll go very deep into the ocean, and we'll meet some of the most interesting living things on Earth.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and t
Do You Know Why Screens Are So Hard To Put Down? 📺
In this episode, we're going to look at what science says about looking at screens. Researchers are still learning about the effects of staring at the screens of our devices, but what they've found so far explains a lot.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts.
Sleep Tight!,
Sheryl & Clark
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Understanding Animals: Do You Know About the Flamingo? 🦩
Have you ever seen a flamingo and thought — that can't be a real animal? The colour alone is almost too much. That particular shade of pink, standing in the water, reflected back up from the surface. It looks like something someone painted. But they are real, and in this episode we are going to find out all about them.
Grown-ups: we value your feedback. Our email and message link are in the epis
Understanding Animals: Do you know about the Octopus? 🐙
In this episode, we're going to find out how the octopus thinks, how it hides, how it hunts, and why it might be the most fascinating animal in the ocean.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts.
Sleep Tight!,
Sheryl & Clark
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Understanding Animals: Do you know about the Rhinoceros? 🦏
In this episode we are going to learn all about the Rhinoceros, and try something new! We have included a story about Rhino and Pip who will help us learn all about the life a rhino on the Savannah.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts.
Sleep Tight!,
Sheryl & Clark
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Understanding Animals: Do you know about the Arctic Hare? 🐇❄️
In this episode, we're going to meet the Arctic hare. The Arctic hare lives in one of the coldest, most remote places on Earth, the frozen tundra of northern Canada and Greenland, and it has some of the most amazing adaptations of any animal we can remember covering on our show.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s que
Understanding Animals: Do you know about Giraffes? 🦒
In this episode, we’re going to explore the giraffe. We will learn how its long neck works, how that enormous heart keeps everything moving, and how giraffes eat, sleep, and stay safe in one of the wildest places on Earth. We’ll even meet a baby giraffe, and discover that its very first moment in the world is quite dramatic. We have saved some big words for you too.
Grown-ups: we value your feed
Listener Questions: Your Body Is Weird and Wonderful, Part 2 🧬 🦠 👣
This episode is Part 2 of our Weird and Wonderful series — and if Part 1 was about pain and itching and boo boos, Part 2 is about the other kind of body science. The kind that makes you giggle a little.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts.
Sleep Tight!,
Sheryl & Clark
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Listener Questions: Your Body Is Weird and Wonderful, Part 1 🧠 ⚡ 🧬
In this listener questions episode we try to answer questions about our bodies. Why things hurt. Why things itch. And why our body sometimes does things that seem completely strange - until science explains them.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts.
Sleep Tight!,
Sheryl & Clark
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Making & Creating: How Books Are Made 📚
We have a super big topic in this episode.We are going to try and answer the question, How are books made? We start with how paper is made, then, we'll explore how words and images get printed on those sheets. and finally, we'll see how printed pages are bound together to become the books you hold, read, and love.
Grown-ups: we value your feedback. Our email and message link are in the episode no
Making & Creating: How Rockets Work 🚀🧑🚀
In this episode we are going to try and answer the following question: How do rockets work—what makes them powerful enough to escape Earth's gravity and travel to space?
Did you know that all our topics are submitted by you our listeners?
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts.
Sleep Tight!,
Sh
Making & Creating: How Is Chocolate Made? 🍫
In this episode, we're starting something new: a series of topics called Making & Creating, where we explore how people make things—from raw materials all the way to the finished products you see, use, and sometimes taste every day.
In this episode, we are going to try and answer the following question: How is chocolate made—from a tree all the way to the chocolate bar you unwrap? Sounds yummy.
The Science of You: How Your Heart & Circulation Work ❤️
In this episode we are going to try and answer the following questions: How does your heart work—and how does blood travel through your whole body and back again? We'll start with what your heart is and how it pumps, then, we'll follow the journey blood takes through your body, finally, we'll explore why your heart speeds up and slows down, and what you can notice about your own heartbeat.
Grown-
The Science of You: How Gratitude Changes Your Brain 🧠🔬
In this episode we are going to try and answer the following questions: What is gratitude, and how does practicing it actually change your brain? We'll start with what gratitude is and why your brain naturally has a harder time noticing good things than noticing problems. Then, we'll explore what happens inside your brain when you feel grateful -- which parts light up, what chemicals get released,
Fun Facts: Snow, Shadows, Seeds & Space! ❄️🌍🚀
In this fun facts episode, we are covering all kinds of fun topics including why snow sparkles, shadows, Australia facts, and space stuff. Lots of fun facts to remember as you fall off to sleep.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts.
Sleep Tight!,
Sheryl & Clark
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The Science of You: Nightmares & Sleep Cycles 😴
In this episode we are going to try and answer the following questions: Why do we have nightmares—and what's happening in our brain while we sleep? We'll start with what sleep cycles are and the different stages your brain moves through each night. Then, we'll explore what dreams and nightmares are, and why they happen. Finally, we'll talk about what you can do when bad dreams visit, and why they'
The Science of You: How We Hear Sound 👂🏻
In this episode we are going to try and answer the following questions: How do we hear sounds, and why is hearing so important? We are going talk a lot about the ear and sounds and really interesting stuff like that.
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts.
Sleep Tight!,
Sheryl & Clark
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The Science of You: Why We Bleed 🩹
In this episode we are going to try and answer the following questions: Why do we bleed when we get a cut, and how does our body know exactly how to stop it?
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts.
Sleep Tight!,
Sheryl & Clark
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How Things Work: Time Zones ⌛✈️
In this episode we are going to learn about time zones - how do they work? Why do we have them? What happens when you fly through multiple time zones? And what exactly is jet lag?
Grown-ups: we value your feedback. Our email and message link are in the episode notes—please send us your child’s questions and thoughts.
Sleep Tight!,
Sheryl & Clark
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Do you know about Reindeer? 🦌🎅🏻 | Encore HoHoHo
In this episode, we're learning all about reindeer! Discover how these incredible animals survive in the Arctic, their amazing migrations, the unique features of their antlers, and the science behind their warm, red noses. We'll also dive into their role in holiday traditions and the important connections they share with people and the environment.
Sleep Tight!,
Sheryl & Clark
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🎁 This Might Be the Best Gift You Give This Year 🎁
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Listener Questions: Left Hands, Scratching Posts, and the Big Bang 🫲🏻😼💥
In this episode we will explore things you might notice about yourself or your pets, like why most people are right-handed or why cats love their scratching posts. Others ask about phenomena we experience every single day - like why the sky gets bright and then dark again. And one question tackles the biggest mystery of all: how the entire universe began, and what might have existed before it.
Sl
Listener Questions: Spider Webs, Galaxies, and Why We Laugh 🕸️🤣☄️
In this episode, we're answering another round of listener questions. Some explore the tiny and detailed, others zoom out to the grandest scale imaginable, and some dive into everyday mysteries. Don't forget to send in your questions!
Sleep Tight!,
Sheryl & Clark
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Listener Questions: Mountains, Molecules, and Tiny Bugs ⛰️🧬🦟
In this episode, we're answering some of the great questions from our listeners all around the world! We're going to explore six wonderful questions that arrived in our inbox, each one helping us learn something fascinating about our world. We'll learn how mountains grow, why everything in the universe is made of molecules, how diamonds form over billions of years, meet the tiniest bug on Earth,
Understanding Animals: Big Cats (and Little Ones) 🐅🐈⬛
In this episode, we'll answer three specific questions. First, why do cats have those strange vertical slit pupils while we have round ones? Second, why can't lion cubs roar when they're little, but your kitten could meow from the day it was born? And third, what's actually different between house cats and their wild cousins—and what's surprisingly the same?
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Grown-ups: we value your feedback.
Understanding Animals: Horses 🐎
In this episode we are going to travel through time to see how horses evolved from tiny forest browsers into the powerful runners we know today. We'll discover how horses behave and communicate, explore their remarkable bodies, meet the wonderful variety of horses in the world today, and learn what makes a pony different from a horse.
Grown-ups: we value your feedback. Our email and message link
Understanding Animals: Dogs 🐶
In this episode we are going to learn about some of our best friends dogs. We'll answer three specific questions: First, why can't puppies see when they're born? Second, why don't Poodles shed their fur like Labradors do? And third, how can dogs wag their tails while doing many other things at the same time? By the end of this episode, you'll understand how puppies develop, why different breeds lo
How things work: Submarines 🌊⚓🫧
In this episode we explore how submarines dive, hover, and rise through the ocean. We'll discover the special ballast tanks that can fill with water or air to make the submarine heavier or lighter, learn about Archimedes' principle—the rule that explains why things float or sink—and find out how dive planes steer the boat up and down while the pressure hull keeps everyone safe from crushing water
Animal Superpowers: Barn Owls 🦉🌙
In this episode we will learn about the barn owl, a pale, ghostly hunter with two superpowers working in perfect harmony. We'll discover their asymmetrical ears that create a three-dimensional sound map, letting them pinpoint a mouse's exact location in complete darkness with pinpoint accuracy. And we'll explore their specially designed feathers—serrated leading edges, velvety surfaces, and fringe
Animal Superpowers: Electric Eels ⚡🐟
In this episode we will learn about the electric eel—a fish (yes a fish) with a triple-battery system that generates up to 860 volts of electricity. We'll discover how thousands of specialized cells stack together to create shocking power, explore the murky Amazon rivers where electricity became the perfect adaptation, and follow young eels as they grow from tiny hatchlings into full-powered preda
Animal Super Powers: Axolotls 🦎✨
In this episode we learn about the axolotl, a remarkable salamander with not one but two superpowers. First, they can regenerate entire body parts, regrowing legs, tails, and even portions of their heart and brain with almost no scarring. Second, they've mastered the art of staying young forever, keeping their feathery gills and living their whole lives underwater instead of transforming into land
Animal Super Powers: Giant Pandas 🐼
In this episode we explore three remarkable adaptations that help giant pandas thrive in the misty bamboo forests of China. We'll discover the "false thumb"—a special wrist bone that works like an extra finger for gripping slippery bamboo stalks. We'll learn how pandas manage a low-nutrition diet by eating for up to 16 hours a day while conserving energy between meals. And we'll explore how these
🤖 🔬 How are we doing? 🦠🧪
📢📢 We would love your feedback on season 5! Send us an email at hello@sleeptightscience.com , and we will be very thankful. And, if you have any science questions, include them too!
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About Sleep Tight Science
We’ve got bedtime down to a (Sleep Tight) Science! Sleep Tight Science is an award winning bedtime podcast that makes science accessible and enjoyable for the whole
Animal Superpowers: Orangutans - Treetop Engineers 🦧🌙
In this episode we learn how orangutans long arms and hand-like feet create extra leverage for hanging and reaching; why keeping the centre of mass below the branch makes wobbles settle; and how a gentle tug on a bendy sapling brings the next hold closer. We also learn about their nightly nests and simple tools.
Grown-ups: we value your feedback. Our email and message link are in the episode note
Listener Questions: From Space to Skin ✨
In this episode we answer four wonderful questions from curious kids around the world! From the Moon's reflected sunlight to the tiny muscles under our skin, we'll explore science that connects the vastness of space to the wonders of our own bodies. Each answer includes simple explanations and something kids can notice or try at home.
Grown-ups: we value your feedback. Our email and message link
How Things Work: Swimming Pools and Buoyancy 💧
Tonight we follow the pool’s “tiny river” to see how calm water stays clean—and why bodies float. We picture the hidden loop (skimmer → pump → filter → return jets), learn how chlorine and balanced pH keep water friendly, and then slip into the physics of floating—buoyancy, density, and displacement (with lungs as soft balloons).
Grown-ups: we value your feedback. Our email and message link are i
How Things Work: How Helicopters Stay in the Air 🚁🌙
In this episode, we picture a helicopter’s spinning rotor as a moving wing that makes lift; notice how blade pitchchanges lift; and hear how pilots use the collective (up/down), the cyclic (lean the “flying circle” to drift forward/sideways), and the pedals with the tail rotor to keep the nose steady. We touch on translational lift, ground effect, and the reassuring idea of autorotation—how helic
How Things Work: Fidget Toys and Focus 🧠🌙
Season 5 begins! In this episode we look at how fidget toys can help some brains focus—and why bedtime calls for softer tools. We explore attention as a gentle “spotlight,” meet the hidden sense of proprioception, try tiny visualizations, and learn the Three S’s for helpers: Silent, Simple, Small. Perfect for winding down while learning something real.
Grown-ups: we value your feedback. Our email
🎉 Season Finale: from 3D Printing to Stardust 🖨️⭐🌌
In this episode we're going to try our best to summarize 48 episodes of science discoveries—from 3D printers and ancient stardust, to why your body makes gas and Mars has a butterscotch sky. We'll revisit amazing body systems, blast off to explore space, and celebrate all the fantastic questions you've sent us. Plus, some fun facts that will make you the most interesting person at breakfast!
Slee
Do you know about Stink Bugs? 👃 | Plug your nose encore
While we take a short break this week, we’re bringing back one of our favourite Sleep Tight Science episodes all about Stink Bugs. Plus, we will share some fun facts about them and answer listener questions.
Sleep Tight!,
Sheryl & Clark
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Do you know about our solar system? ☄️ | Bernice learns science
While we take a short break this week, we’re bringing back one of our favourite Sleep Tight Science episodes all about the solar system—featuring Papa Bear telling Bernice about planets and moons, while they have some super yummy cookies.
Sleep Tight!,
Sheryl & Clark
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Do you know about Polar Bears? 🐻❄️❄️🧊
In this episode, we travel to the Arctic to learn all about polar bears! Discover how their giant paws, thick fur, and clever hunting skills help them survive freezing temperatures. We explore their life cycle, behaviours, and how they’re different from other bears—plus, why they don’t eat penguins! Then, we answer listener questions about sea animals in winter, the magical northern lights, and wh
Listener questions: Fuzzy Berries, Green Grass, Wiggly Weeds & Crooked Trees 🌱 🍃 🍎 🌿
Why is grass green? Why do apple trees grow in spooky shapes? And what’s the deal with those tiny hairs on raspberries? In this episode of Sleep Tight Science, we answer real questions from curious kids around the world—including Suraya in Australia, Oliver in the U.S., and Yasmeen in New Zealand!
We’ll explore how weeds grow without being planted, what makes leaves change color in the fall, and
Fun Facts: Invertebrates, rainforests & the human body 🪱🍃🫀
In this episode, we’ll explore boneless animals like jellyfish and worms, the lush and wild world of rainforests, and the amazing systems inside the human body. It’s science that’s full of surprises—perfect for curious kids and cozy bedtimes.
Sleep Tight!,
Sheryl & Clark
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Listener Questions: From Slimy Eggs to Stinky Science 🔬🍬👃🥚
In this episode, we’ll explore fascinating science questions sent in by kids around the world! Declan (age 6) and Eva (age 4) will help us discover how Sleep Tight Science learns so many things—and why curiosity, research, and asking great questions are at the heart of how scientists think. Alejandro (age 3) will ask why we can’t eat candy for breakfast, and we’ll find out what our bodies really
Do you know about mosquitoes? 🦟
In this episode, we’ll explore the fascinating world of mosquitoes. You’ll learn what they are, why they buzz in our ears, why only some bite, and how they find us. We’ll also discover what happens after a bite, how mosquitoes grow up, and even a few surprising ways they help nature stay in balance.
Sleep Tight!,
Sheryl & Clark
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Do you know about jets? ✈️🛫🌍🛬
In this episode of Sleep Tight Science, we’re learning all about jets! What makes a jet different from other airplanes? How do jet engines work? And why are jets so fast? We’ll learn about the science of thrust, engines, and speed—and finish with some fun facts. Perfect for curious kids who love to learn about science!
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Sheryl & Clark
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Fun Facts: The Cutest Animals in the Wild 🐾🦊🐼🦔🦦🐒
In this episode, we explore some of the cutest wild animals on the planet and share fun, science-filled facts about each one! From fennec foxes and red pandas to sea otters and bush babies, learn how these amazing creatures survive—and why they’re so adorable. Perfect for curious kids who love animals and bedtime science fun!
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Sheryl & Clark
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✨Updated✨ Do you know about robots? 🤖 | Sheryl lost her voice encore
Halfway through recording our latest episode, Sheryl's voice started to sound like a frog, and then like something else we couldn't identify. Sheryl caught a virus that is causing her to cough and affecting her voice. She should be back to normal next week, and with a new episode. Otherwise, you might have to listen to me (Clark) talking to you about science. 😳
Did you know? In this episode o
Listener Questions: Ouch! Barf! Bumps! and the Moon 🌕🚌🤢⚡
In this episode, we will learn all kinds of fascinating science from the questions you sent in! Questions like why we feel pain, and how it's our body's way of protecting us by sending warning signals to the brain. Why we vomit, and the amazing teamwork between your brain and belly that helps protect you from things that might make you sick. Then we learn why buses are so bumpy, especially in the
🎉 We need your help with season 5! 🎉
Clark is working on Season 5 of Sleep Tight Science—and we’d love your help!
What science topics do you want to hear next?
Should we change the music?
Make the episodes longer? Shorter? Or something totally new?
Talk it over with your grown-ups and send us your ideas by email (Email us at hello@sleeptightscience.com or via our website).
If we use your suggestion, you’ll get a spe
Do you know about koalas? 🐨
In this episode we head to the eucalyptus-filled forests of Australia to learn all about one of its most iconic animals: the koala! We discover why koalas aren’t actually bears, what makes marsupials so unique, and how koalas live, sleep, and snack high up in the trees. Along the way, we talk about how long koalas live, the challenges they face in the wild, and why they’re now considered endangere
Do you know how your memory works? 🧠
Sleep Tight!,
Sheryl & Clark
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Themes in this episode:
✔️ What is memory?
✔️ How the brain stores memories (and why neurons mat
Do you know about Jellyfish? 🌊🪼
In this episode of Sleep Tight Science, we learn all about the world of jellyfish! Discover why jellyfish aren’t really fish, how they sting, what they eat, and the incredible ways they glow, swim, and grow. From tiny Irukandji to the giant lion’s mane, you’ll learn all about where jellyfish live, how they move, and their strange life cycle.
Sleep Tight!,
Sheryl & Clark
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Do you know why the sky is blue? ☀️🔵
In this episode of Sleep Tight Science, we take a colorful journey through the science of sunlight, scattering, and the atmosphere to find out why the sky looks blue during the day and red at sunrise and sunset. We’ll explore what light really is, how it behaves, and why the sky on other planets can look completely different! This calming, curiosity-sparking episode is perfect for kids who love to
Listener questions: Winter colds, celiac disease, your teeth and yawning ❄️🦷🛌
In this listener-powered episode, we answer some of the curious, clever, and thoughtful questions you've sent us! Why do kids get sick more often in winter? What exactly is celiac disease? What happens if you never brush your teeth or go to the dentist? And why do we sometimes cry or yawn in strange places—like inside a car? With clear explanations and a warm, bedtime-friendly tone, we explore the
Do you know about semiconductors? ⚡💻
Semiconductors might be tiny, but they do BIG things! In this episode of Sleep Tight Science, we explore what semiconductors are, how they’re made, and why they’re so important in everything from smartphones and laptops to space rockets and self-driving cars. This episode is perfect for curious minds who love asking questions like How do computers work? or What makes my phone so smart?
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