I Slept Through Science: Recent Episodes
I Slept Through Science
Have you ever felt like you slept through science when you were in school, but now wish you could understand the world around you better? Then this podcast is for you! Each week Cheryl asks a science question and Ryan, a science teacher, does his best to answer. From boiling water to shooting stars and everything in between, listen along and learn about the science you encounter every day.
This is our last lesson, so Cheryl is asking Ryan as many questions as she can (listed below)! It's been fun learning together, but all good things must come to an end. It's never too late to learn about the world around you.00:00:00 - Intro00:01:56 - Plan for This Lesson00:06:11 - Why do ears pop on planes?00:06:24 - What are hiccups?00:07:13 - Why is my voice deeper when I'm tired?00:07:21 - Why do onions make me cry?00:08:29 - Why can you tell a woman is pregnant in her pee?00:09:56 - Is the air quality worse in areas without trees?00:12:54 - How does rain improve air quality?00:14:19 - What is a brain freeze?00:16:51 - Why is my bubbly bubbly? (carbonated drinks)00:19:29 - Why are steam burns so bad?00:20:52 - What happens when you caramelize onions?00:22:23 - Why can't breathalyzer tests be faked?00:25:33 - Why is my hair turning gray?00:26:53 - What is plant sex?00:28:33 - How can wood be nutritious to bugs?00:29:48 - How does a siphon work?00:32:41 - Why are cat's pupils a different shape?00:33:30 - How do helicopters or planes fly with all that weight?00:36:10 - Why does looking at the road help my car sickness?00:38:26 - How do smelling salts work?00:38:51 - Why does taking the bark off a tree kill the tree?00:40:39 - Why can a cold drink "sweat" on the outside?00:41:41 - How does animal camouflage work?00:44:01 - Is the 5 second rule real?00:45:46 - Does gum stay in our stomachs for 7 years?00:45:54 - Why is a stadium warmer when the roof is closed than when it's open?00:47:31 - Does sugar make kids more hyper?00:48:57 - Why do things look black and white in dim lighting?00:52:31 - Why does helium make our voices higher?00:53:12 - Why does salt make someone float more easily in water?00:53:53 - How does an instant pot work?00:54:59 - Do whales drink water?00:56:25 - What does it mean for Mercury to be in retrograde?01:01:26 - Podcast ReflectionResources from this episode:Stellarium
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Ryan is super excited to talk all about Astronomy this week! This is our last lesson of the unit and there's a lot to cover. From what satellite's and probes actually do (besides take pictures) to our "cosmic address," there's a lot for Cheryl to understand! After the tour around space, Cheryl takes her final quiz and reflects on the unit as a whole. It's never too late to learn about the world around you.This is part of the What is Science unit.Resources from this episode:Size of Famous SatellitesObservable UniverseImaging Science Subsystem (ISS)DART Mission OverviewOsiris Rex
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What do meteorologist do beyond just predicting the weather for the news or apps on our phones? And why do we call it "meteor-ology" when it's not about meteors from space? Learn more about what exactly meteorology is and you'll even get to hear Cheryl sing a song about the weather! It's never too late to learn about the world around you.This is part of the What is Science unit.Resources from this episode:
Meteorologists do not study meteors - so why the name? Atmospheric circulation (image)Wacky Weather (song)
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Do you remember the Rock Cycle? What are crystals and where do they come from? What exactly do geologists do other than study rocks? From dinosaurs to volcanoes, Cheryl learns a lot about geology and Ryan learns about "rock hounding!" It's never too late to learn about the world around you. This is part of the What is Science unit.Resources from this episode:The difference between rocks and mineralsPangaea Ultima, the Next Supercontinent, May Doom Mammals to Far-Future ExtinctionIridium layer in Earth (Google image search)
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Physics may be the most fundamental science, but sometimes it can be intimidating. What's it's purpose? What does it endeavor to understand? And what does it have to do with Yoda and time zones? Learn along with Cheryl to find out. It's never too late to learn about the world around you.This is part of our What is Science unit.
Resources from this episode:
Half-Hour and 45 Minute Time Zones
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What is the Periodic Table and why is it shaped the way it is? What's the difference between an atom and an element? And, most importantly, how is Chemistry like makeup? These and more questions all get answered this week as Cheryl learns more about what Chemistry really is. It's never too late to learn about the world around you.
This is part of our What is Science unit.
Resources from this episode:Google Periodic Table
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Ryan's "first love" science, this week he and Cheryl learn what exactly the study of Biology is. How is it organized, what do biologists actually study, and what's the best mnemonic to remember the levels of taxonomy? It's never too late to learn about the world around you.
This is part of our What is Science unit.Resources from this episode:Episode 72 of Take Me With You (Cheryl & Ryan's travel podcast)
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We're starting a new unit, which will also be our last unit: What is Science! We're starting with an overview of what science is and what science isn't and how to know the difference. Cheryl shares her perspective, as well as how it's changed during this podcast. It's never too late to learn about the world around you.This is part of our What is Science unit.
Resources from this episode:
What is science?
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We've reached the last two planets in the solar system, Uranus and Neptune. We've seen some pretty interesting things on the planets we've visited, but there's still some unique things to learn about our planets with the last two, including a memorable previous name of one of them. It's never too late to learn about the world around you.
This is part of Our Deadly Solar System unit.Resources from this episode:
Uranus (NASA)Neptune (NASA)Solar System TemperaturesPlanet sizes to scale (image)
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Saturn is best known for its rings, but how much do you really know about them? How big are they? How many are there? What are they made of? Saturn also has the most moons of any planet in the solar system and Cheryl gets to learn about some of the interesting and unique features of a few of them...including Ryan's favorite moon, Mimas. It's never too late to learn about the world around you.This is part of Our Deadly Solar System unit.Resources from this episode:Rings of Saturn labeledRings of Saturn (NASA picture)Rings from the side (NASA picture)Saturn lit from behind (Cassini)NASA Crashed the $4 billion Cassini Spacecraft into SaturnCassini flying over Enceladus (animation still)TitianMimasLife on Titain? (ESA)Enceladus' Water Plumes Contain Life CluesJuno (NASA JPL)NASA looks ahead to future Saturn missions as Cassini nears it's end
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The big red spot. Super fast winds. The solar system's largest planet has a lot going for it and can be a dangerous place. Is Jupiter's big red spot more like a tornado or a hurricane? Is there lightning on Jupiter? Come learn more about the largest planet in the solar system with Cheryl! It's never too late to learn about the world around you.This is part of Our Deadly Solar System unit.Resources from this episode:JPL Picture of the Great Red Spot
A Journey to Jupiter (YouTube)
NASA Solar System - Jupiter
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Cheryl has been confused by this for a while now: how can a planet be made only of gas? Does that mean there's no solid surface at all, or is the atmosphere just really thick? What would it be like to be "on" a gas giant planet? Could you breathe in the planet itself? Learn the answers to these questions and more in this lesson. It's never too late to learn about the world around you.This is part of Our Deadly Solar System unit.
Resources from this episode:
Jupiter Facts: NASASaturn Facts: NASAGalileo Project: Jupiter's Interior
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Between Mars and the gas giants are a bunch of small-ish rocks floating in space we call the asteroid belt. But what exactly is the asteroid belt and does it look like it does in Star Wars? More importantly, do we need to worry about an asteroid destroying all life on Earth? It's never too late to learn about the world around you.This is part of Our Deadly Solar System unit.Resources from this episode:Asteroids: Facts (NASA)The Asteroid Belt contains solar system remnantsA skyscraper-size asteroid flew closer to Earth than the MoonRussian Meteor (YouTube)
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Of all the other planets in our solar system, we hear about humans living on Mars the most. Is that because it's the most similar to Earth? What challenges would still exist for humans to be able to live on Mars? It's never too late to learn about the world around you.This is part of Our Deadly Solar System unit.Resources from this episode:NASA Solar System Exploration: MarsMartian atmosphereMars' atmosphere: facts about composition and climateYour guide to water on Mars
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We've been working through the Solar System and have reached our home, the Earth! We already know lots of things that could kill us on Earth, but what about things out in space? Does a star exploding far away from us (a supernova) have the potential to be deadly too? Listen and find out! It's never too late to learn about the world around you.This is part of Our Deadly Solar System Unit.
Resources from this episode:Death from the Skies! (book)
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Venus is farther away from the Sun than Mercury, but it's surface is 100 degrees hotter - how is this possible?! Does Venus have an atmosphere and if so, wouldn't have help it be cooler, not hotter? And what extreme condition on Venus' surface could kill you faster than the hot temperatures? It's never too late to learn about the world around you.This is part of the Our Deadly Solar System unit.Resources from this episode:NASA Solar System: VenusNewly processed views of Venus from Mariner 10Google Image Search: Venera images
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The closest planet to the Sun, Mercury can get very hot, but would you believe you could also freeze to death on the planet? Would you also believe that a day on Mercury could be longer than it's year? How could these things be possible? Mercury is more interesting than you might realize! It's never too late to learn about the world around you.
This is part of Our Deadly Solar System unit.
Resources from this episode:
NASA Solar System Exploration: Mercury
Crash Course: Mercury
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We all know the Sun is hot, but how close could we get before getting totally burned? This week we start a unit about the solar system and the ways it can kill us!
This is part of Our Deadly Solar System unit.
Resources from this episode:
How close can we get to the Sun? NASA has a good idea
How close could a person get to the Sun and survive?
How close can we get to the Sun?
Parker Solar Probe
NASA spacecraft enters the Sun's corona for the first time
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Just like school, we're taking a break for summer. Don't worry, we'll be back in September. If you think of good questions during your summer adventures, be sure to email them to us:
ISleptThroughScience@gmail.com
It's never too late to learn about the world around you!
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If a tree falls in the woods and no one is there to hear it, does it make a sound? That all depends on what sound actually is! Cheryl has some ideas and learns more about what sound is, how we hear, and how sound is connected to light. How much do you know about sound? It's never too late to learn about the world around you.
This is part of the Invisible Things unit.
Resources from this episode:
Longitudinal wave using slinky coil (YouTube)
Mythbusters: Shattering Subwoofer
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We hear a lot about DNA these days, but how much do you actually know about it? How much DNA do we have, where is it in our bodies, and why is it actually important for us? What does DNA actually do? See if what you think matches what Cheryl things and whether or not it's aligned with what's really going on. It's never too late to learn about the world around you.
This is part of the Invisible Things unit.
Resources from this episode:
Mapping the 100 trillion cells that make up your body
A long and winding DNA
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We're all familiar with the chemical formula for water: H2O. But if water has oxygen in it, and we need oxygen to breathe, why can't we breathe water? Lots of other animals are able to breathe underwater, so why can't we? What's different about lungs and gills that prevent us from getting oxygen from the water? Learn these answers along with Chery! It's never too late to learn about the world around you.
This is part of the Invisible Things Unit.
Resources from this episode: How fish gills work If water is made up of hydrogen and oxygen, why can't we breathe underwater? Dissolved oxygen
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We know sunlight can cause a sunburn, but why? What is the light actually doing to our skin? Why don't we get a sunburn every time we go outside in the sun? And why does our skin continue to burn, even after we're out of the sunshine? Learn along with Cheryl for this week's lesson. It's never too late to learn about the world around you.
This is part of our Invisible Things unit.
Resources from this episode: Ultraviolet (UV) radiation and Sun exposure UV radiation What happens to your skin when you get a sunburn?
What happens to your skin when you get sunburnt?
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While it may seem simple, what actually makes the wind blow? Why don't we have wind every day? Does our spinning planet have anything to do with the wind? Cheryl applies things she's learned about temperature and pressure to try to answer the question. It's never too late to learn about the world around you.This part of our Invisible Things unit.Resources from this episode:What If? (website)What If? (Amazon)Terrible Things Map
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Remember having a substitute teacher? This week we have a special guest to teach Cheryl (and Ryan) all about electric motors and what exactly electricity is in the first place. He even shows a demonstration of how to make your own electromagnet! It's never too late to learn about the world around you.This is part of the Invisible Things unit.
Resources from this episode:
Brushed DC Electric Motor
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Inspired by a scene from the TV show Friends, Cheryl wants to know if soap is self-cleaning or not. Through talking about the science behind soap, Cheryl realizes she doesn't really know what soap does. Do you know? It's never too late to learn about the world around you.This is part of the Invisible Things unit.
Resources from this episode:
Frequent questions about hand hygieneHow does soap work? How soap works: the science behind hand washing
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Gravity is something we experience every day, but do you know what it is and how it works? Does gravity pull bigger objects more than smaller object? Who was that scientist that threw stuff off of a tower to see how it all fell? These questions and more in this week's lesson. It's never too late to learn about the world around you.This is in our Invisible Things unit.
Resources from this episode:
Higgs BosonEinstein Field Equations
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This week we're doing a cross over episode with Ryan & Chery'ls previous travel podcast, Take Me With You. Ryan will share about his trip to Greece & Italy, along with the cool science he got to experience while there. From illusions in Athens to volcanoes in Italy, there's lot's to experience! It's never too late to learn about the world around you.Watch the podcast on YouTubeFollow us on Facebook, Instagram, & Twitter
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Unlucky 13, don't step on a crack, black cats, breaking mirrors...while we might claim to not be superstitious, it's amazing how prevalent they are in societies all over the world. Little things we do or say are often rooted in superstitions. What are common superstitions we might believe or even repeat ourselves? Where did our superstitions come from? What makes us want to believe they are true? All great questions we'll tackle in this week's lesson. It's never too late to learn about the world around you.This is part of our Quackery unit. Resources from this episode:Quiz about superstitions around the world10 Common superstitionsWhich superstitions are Americans most likely to believe? 5 Popular superstitions in America todayWhy most airlines don't have a row 13 on their planesBad Moon rising: the myth of the full MoonMyth debunked: Full moon does not increase incidence of psychological problems
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We know the Earth isn't flat, but what evidence do we have supporting this? If people think the Earth is flat, how do they explain things like the Sun and Moon and ships getting smaller as they sail away? How long have humans know the Earth isn't flat? And what does it mean to "invoke the conspiracy?" It's never too late to learn about the world around you.
This is part of the Quackery unit.
Resources from this episode:
Oh No Ross and Carrie Podcast: Flat Earth
Eratosthenes
Behind the Curve
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Clean eating. Whole 30. Whole food. Natural. Organic. Removing toxins. There are lots of ideas connected to eating healthy. Are any of them true? Are any of them helpful? And what does Ryan get on his soapbox about? Listen this week and find out. It's never too late to learn about the world around you.
This is part of the Quackery unit.
Resources from this episode:
Whole 30 Shopping List
Whole 30 Shopping List: Low FODMAP
Impact of Assigning Moral Virtue to Food, According to Experts
Toxin
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Homeopathy, naturopathy, and other types of alternative medicine. How are they the same and how are they different? What exactly does homeopathy say about curing ailments? And why does Cheryl call it the dilution solution? Listen to this week's episode to find out! It's never too late to learn about the world around you.
This is part of the Quackery unit.
00:00 - Intro 00:50 - The Question 02:04 - Pre-assessment 10:21 - The Lesson Explanation 23:01 - Quiz
Resources from this episode:
Oh No Ross and Carrie Podcast Episode
Homeopathy (NHS)
Homeopathy (NCCIH)
Homeopathy: what you need to know
Homeopathy - where is the science?
PhD in Homeopathic Medicine
Referenced in this episode:
Homeopathic product categories
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Essential Oils are incredibly popular for their wonderful scents as well as their healing properties. But what about these oils is essential, anyway? And are they able to do all the things they claim? There are so many people who swear by them; how do we evaluate their experiences from a scientific perspective? And how exactly can you align your DNA? Learn all this and more in this week's lesson! It's never to late to learn about the world around you.
This is part of the Quackery unit.
Resources from this episode:
Do essential oils work? Here's what science says
Essential Oils (NIH)
Are all oils essential? Are Essential Oils even oils?
Essential Oils Websites Referenced:
150 List of of Essential Oils and their uses and their benefits
How Essential Oils became the cure for our age of anxiety
Health and wellness with the power of thieves essential oil
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Ionized water is marketed as a way to balance the pH of our bodies and alkaline water is supposed to be good for us, but is it? What exactly is pH, anyway? Join us this week to learn about how the placebo effect could contribute to the claims that ionized water can heal all sorts of ailments. It's never too late to learn about the world around you.
This is part of our Quackery Unit
Resources from this episode:
Alkaline water: Benefits, side effects, & dangers
Is alkaline water a miracle cure or BS?
What is alkaline water?
Ionized Water Websites Referenced:
Health benefits of ionized water
Alkaline water pros and cons
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Astrology has been around for thousands of years. Since astrology has to do with the stars, does that make it scientific? What exactly is the Zodiac, and what does that have to do with my personality? Does astrology make any claims that science can test? Join us for our first look into pseudoscience. It's never too late to learn about the world around you.
This is part of our Quackery unit.
00:00 - Intro 02:08 - Disclaimer 03:57 - The Question 05:07 - Pre-assessment 13:51 - The Lesson Explanation 31:25 - Quiz
Resources from this episode:
Is astrology real? Here's what science says
Today's Free Horoscope (used in the episode)
Stellarium (program used in the episode)
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Our last listener question for a while, we look into what fog is. Is fog just a cloud that's low to the ground? If so, why is it so close to the ground? Can fog rain? Is fog heavier than clouds? So many questions from such a simple question! It's never too late to learn about the world around you. \
Resources from this episode:
How fog forms
Fog
What's the difference between fog and clouds?
Why is fog usually seen in the morning?
Air & water
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Though it might not seem immediately obvious, sometimes plants appear to want their own personal space. Crown shyness is an interesting phenomenon where the tops of trees stay away from each other. But how to trees know where other trees are and how to they stay away from them? Plants are much more complex than we often give them credit for! It's never too late to learn about the world around you.
This is a listener question.
Resources from this episode:
Crown shyness
Crown shyness: are trees social distancing too?
Watch roots from different plants compete for prime real estate underground
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Another listener question this week about something that seems simple: engines. Do you know the difference between an engine and a motor? How do car engines actually make cars move? Where does all that energy come from? Find out how much Cheryl does (or doesn't) know about engines in this week's episode. It's never too late to learn about the world around you.
Resources from this episode:
Is an engine a motor?
Internal combustion engine basics
How car engines work
How does an engine work?
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We've all been annoyed by the drip-drip-drip of water from a leaky faucet, but why is there a rhythm to the dripping? What prevents the water from simply leaking out continuously? And can water defy gravity? Listen to this week's lesson to find out. It's never too late to learn about the world around you.
This is a listener question.
Resources from this episode:
Raindrops are different sizes
Is there a maximum size of water drops in nature?
Snatoms Molecular Models
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If you don't have to run your heater all year, you're probably familiar with the smell that accompanies turning it on again in the fall. But what causes that smell? Is something burning? What does it mean for something to burn, anyway? Does there have to be fire for something to burn? Join Cheryl as she learns answers to these and more questions this week. It's never too late to learn about the world around you.
This is a listener question.
Resources from this episode:
4 weird smells you might notice when you first turn on your heat
Combustion
Why do some things burn while others melt?
Tracing the chemistry of household dust
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This week's question is about drinking straws. Have you ever put your straw in a drink, held your thumb on the top of the straw, and pulled it out of the drink? What keeps the liquid inside the straw? Why doesn't it fall out? Does this mean the liquid is defying gravity? Join us for this week's lesson to find out. It's never too late to learn about the world around you.
This is a listener question.
Resources from this episode:
If I seal a straw with my finger, the liquid stays inside. Why?
Pressures and forces on water contained in a straw when your finger seals the top
UCSB Science Line
World's Longest Straw
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If movies are to be believed, when you are in space, opening a door can have disastrous consequences. Can space really suck all the air out of a spaceship? What about all those science teachers who say that "science doesn't suck?" Learn all about this, as well as a new way to find out if Ryan is excited about a topic, in this week's lesson. It's never too late to learn about the world around you.
This is a listener question
Resources from this episode:
How long could star-lord survive in space unprotected?
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Lesson 53 What seems like a simple question ends up being more difficult that you might think: what exactly is fire? Is it a solid? A gas? Something else? And what causes the actual light we see? This week Cheryl & Ryan tackle a listener question from Katie that turns out to be something lots of people have asked and others have struggled to answer. It's never too late to learn about the world around you.
This is a listener question!
Resources from this episode:
What is fire?
What is fire? (YouTube)
The flame challenge
What is a flame? (YouTube)
What state of matter is fire?
Is fire a solid, a liquid, or a gas?
What is the state of matter of flame?
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We've all heard it: reading in dim light is bad for your eyes. But is it true, or is it a myth? Lisa, one of our listeners, asks us this question and Cheryl and Ryan do their best to get to the bottom of it, including learning a bit more about why pirates wear eye patches! It's never too late to learn about the world around you.
This is a listener question!
Resources from this episode:
Reading in dim light
Heard the one about reading in dim light being bad for your eyes
Is reading in the dark bad for your eyesight?
Prevent eyestrain from digital devices
Computer vision syndrome: causes, symptoms and treatments
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After partying a little too hard for New Year's, sometimes we experience a hangover, but what exactly is a hangover and what causes it? And, most importantly, can it make your brain shrink? Cheryl learns more about dehydration, diuretics, and even hormones to help understand that nauseous, achy, head-splitting feeling the morning after imbibing too much. It's never too late to learn about the world around you.
This is part of the Holiday unit.
Resources from this episode:
Why do hangovers occur?
Hangovers
Your complete guide to the science of hangovers
Does alcohol dehydrate you?
Why does drinking alcohol cause dehydration?
Our brains literally shrink when we don't drink enough water
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Singing Christmas carols is a long tradition, but it got Cheryl thinking: how does singing work? And is the voice box even a real thing? To answer this, Ryan and Cheryl talk about vocal cords and remember back to Lesson 9 about whistling. We even get Cheryl singing a carol for us! It's never too late to learn about the world around you.
This is part of the Holiday unit.
Resources from this episode:
How do vocal cords work when you sing?
Vocal folds
Inside the larynx
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Is snow just frozen rain? If so, shouldn't it look like little ice cubes? Does snow form in clouds, or after it's left the clouds? And what about all the other types of frozen precipitation that falls from the sky, like hail and sleet? learn all about this, plus bonus weather songs from Cheryl in this week's lesson! It's never too late to learn about the world around you.
This is part of our Holiday unit.
Resources from this episode:
How does snow form?
Snow
How do snowflakes form?
Severe weather 101: severe hail types
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Baking Christmas cookies is a fun holiday tradition, but why do we have to follow the recipe so closely? Cooking seems to be much more forgiving than backing. Is there a science reason for that? Listen to this week's episode and find out! It's never too late to learn about the world around you.
This is part of the Holiday unit.
Resources from this episode:
The science of cookies
How to bake a cookie - in terms of Chemistry
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One of the first things we do when decorating for Christmas is put up lights, but how do they work? And what's the difference between the "old fashioned" type of light bulbs and the new LED bulbs? What does LED even mean? This week Cheryl learns about the different types of bulbs, why LEDs are more energy efficient, and how the same bulbs can be both white and colored! It's never too late to learn about the world around you.
This is part of the Holiday unit.
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We've all seen balloons float, but what makes them float? We might be able to understand why a small birthday balloon can float, but what about the big giant Thanksgiving day parade balloons? Why can those float? We also learn why we use Helium instead of Hydrogen, even though Hydrogen would be better at making balloons float. It's never too late to learn about the world around you.
This is part of our Holiday unit.
Resources from this episode:
How Helium Balloons work
Buoyancy
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We've all heard it: eating turkey during Thanksgiving makes you sleepy. You might have even heard that tryptophan is to blame, but is any of this true? And what even is tryptophan, anyway? Cheryl has her suspicions, but doesn't know why. And if tryptophan isn't to blame, why do we get sleepy after Thanksgiving dinner? It's never too late to learn about the world around you.
This is part of the Holiday unit.
Resources from this episode:
Does turkey make you sleepy?
Does turkey make you tired?
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Another feature of Thanksgiving dinner are the side dishes like cranberry sauce and jell-o. But what allows these to go from a liquid to a, well, gel? Cheryl thinks there some sort of reaction happening, but doesn't know for sure. To find the answer she will learn how water molecules can be a bit like velcro and stick to proteins. It's never too late to learn about the world around you.
Resources from this episode:
The Firm Chemistry of Gelatin
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Time to start planning for Thanksgiving dinner! Many people brine their Thanksgiving turkeys before cooking them, but why? What does soaking in salt water actually do to the bird? Why would salt water make the meat more moist than simply water alone? Cheryl learns a bit about diffusion and how it helps make this holiday more tasty! It's never too late to learn about the world around you.
Resources from this episode:
The Science of Brining
How to Brine Meat - & Why You Should Bother
The Science of Good Cooking (p. 102)
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Starting a new unit about the science of holidays with Halloween, complete with costumes! Cheryl wonders why carving a pumpkin makes it rot faster, which leads her to realize she's not quite sure what rot is in the first place. She also makes connections back to our Hot & Cold unit with molecules moving (Lesson 11) and cells being damaged when frozen (Lesson 15). It's never too late to learn about the world around you.
This is part of our Holiday unit.
Resources from this episode:
Plant immune system
Rot
How to keep pumpkins from rotting
How to pick the perfect pumpkin - and keep it from rotting
How to stop pumpkins from rotting
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If plants use sunlight to make their own food, why do some plants eat animals for food? Isn't that the opposite of what plants do? In order to answer this question, Cheryl learns a bit more about exactly what photosynthesis does and gains an even greater appreciation for carnivorous plants.
This is part of the Houseplants unit.
Resources from this episode:
Here's how plants became meat eaters
Carnivorous plants: the meat-eaters of the plant world
Carnivorous plant
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After learning a lot about plants, Cheryl realizes the doesn't understand how plants can live underwater: shouldn't they drown? This line of questioning leads to all sorts of things, including where Oxygen comes from and why plants like poop. It's never too late to learn about the world around you.
This is part of the Houseplants unit.
Resources from this episode:
Aquatic Plant
Plant Adaptations
Do Aquarium Plants Need Soil?
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Seasonal allergies plague so many of us, but why aren't we usually allergic to our houseplants? And why don't houseplants usually produce much pollen? What even is pollen, anyway? This week Cheryl gets into the birds and the bees...with plants to learn about pollen, flowers, and where seeds come from. It's never too late to learn about the world around you.
This is part of the Houseplants unit.
Resources from this episode:
Why do my houseplants refuse to send out flowers?
9 Non-flowering plants that cast the magic...
Pothos, epipermmum aurem
Do philodendrons bloom?
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It's healthy to have houseplants, right? But how healthy is it? What makes it healthy? Do houseplants produces more oxygen for us to breath or clean the air from "toxins?" Cheryl and Ryan talk about this, plus more in this week's episode. It's never too late to learn about the world around you.
This is part of the Houseplants unit.
Resources from this episode:
How many plants to produce enough oxygen for one person
Do houseplants increase oxygen levels
Which houseplants should you buy to purify air
Can indoor plants really purify air
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Cheryl has a vine plant that has an interesting pattern of leaf size: when the vine grows horizontally, the leaves are relatively small, but when the vine grows vertically, the leaves are significantly bigger. In order to understand why, Cheryl and Ryan learn about what plants "know," how they know what they know, and even why some plants throw shade. It's never too late to learn about the world around you.
Resources from this episode:
How do seeds know which way to grow?
How do plants know which way is up and which way is down?
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Continuing to probe Cheryl's questions about her houseplants, this week she asks about root bound plants: what causes it and why is it bad for her houseplants. To answer the question Ryan will talk about what exactly nutrients are and why they are important for plants, including why fertilizers actually help plants. It's never too late to learn about the world around you.
This is part of the Houseplants unit.
Resources from this episode:
Pot-Bound Indoor Plants
Understanding Root-bound Plants
Essential Nutrients for Plants
Plant Nutrients in the Soil
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Building off of last week's lesson about overwatering, Cheryl asks about why leaves turn yellow when "bad" things happen to the plant and whether or not it's connected to why leaves change color in the fall. To answer the question Cheryl will need to remember what she learned about pigments and see if she can remember a bit about photosynthesis.
This is part of the Houseplants unit.
Resources from this episode
Common mistakes growing tomatoes in containers
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Cheryl is into growing houseplants and realized that she has lots of questions about how they work, so we're going to do a whole unit just on houseplants! This week we learn about how overwatering and underwatering are related to each other, the things plants need to live, and why roots are so important for healthy plants. Its never too late to learn about the world around you.
This is part of the Houseplants unit.
Resources from this episode:
Basics of Plant Respiration
Why do plants need oxygen through their roots
Tree Physiology Primer
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In the last lesson of the color unit, Cheryl asks about the dress the "broke the internet" where people couldn't agree about whether it was white and gold or blue and black. To answer the question, Ryan will talk about how we perceive colors, including a few optical illusions!
This is part of our Color unit.
Resources from this episode:
How "the dress" became an illusion unlike any other
Optical Illusion: Dress colour debate goes global
Two years later, we finally know why people saw "the dress" differently
Checker Shadow Illusion 1
Checker Shadow Illusion 2
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Cheryl asks a deeper question about color: what actually makes an object the color it appears? She applies what she's learned about different wavelengths of light to answer the question and along the way learns about other colors of light that humans can't see, like x-rays, gamma rays, ultraviolet, microwaves, and even radio waves. It's never too late to learn about the world around you.
This is part of our Color unit.
Resources from this episode:
How do pigments absorb and reflect different wavelengths of light?
Pigment
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Building off of last week's lesson about why the sky is blue, now Cheryl wants to know why sunsets aren't blue! Ryan tries to create some visual aides on the fly, struggles, but still get's the idea across. By the end Cheryl is really starting to get the hang of talking about color!
This is part of the Color unit.
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The quintessential question from growing up, why is the sky blue, gets answered today! One of the commonly given answers ends up not being correct and Ryan gesticulates wildly. It's never too late to learn about the world around you!
This is part of the Color unit.
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We have a special guest exchange student this week with her own science question - our Podcast graphic artist, Beth! As an artist, Beth has a good understanding of colors and paints, but doesn't understand how glow-in-the-dark paint works, so she joins Ryan & Cheryl to see if they can help. It's never too late to learn about the world around you.
This is part of our Color unit.
Resources from this episode:
The Secret Lives of Color
Luminous Paint
The Difference Between Luminescence & Phosphorescence
Phosphorescence
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What actually forms a rainbow? Where do you need to be to see a rainbow? And most importantly, can Cheryl have her own personal rainbow? It's never too late to learn about the world around you.
This is part of our Color unit.
Resources from this episode:
EarthSky
Information Palace
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Based on a song from preschool, Cheryl asks about the real number of colors in the rainbow (and yes, Cheryl does sing the song for us). This leads to lots more questions about light, rainbows in general, and even a bit of history.
This is part of the Color unit.
Resources from this episode:
Science Learn
Scientific Minds
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Cheryl tells a story from her childhood that fuels her desire to see the Northern Lights. But what actually causes them? Is it the Sun? Is something reflecting? Does something generate the light like some organisms can generate light? The answer is even more interesting and cool, so come learn with us today. It's never to late to learn about the world around you.
This is part of the Color unit.
Resources from this episode:
Canadian Space Agency
EarthSky
NASA - Aurorae from space
NASA - Jupiter's aurorae
NASA - Saturn's aurorae
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Happy 4th of July! We start a new unit this week all about color and what better way than by talking about fireworks! Cheryl doesn't think she knows much about fireworks, but we push on anyway and learn that at least some of how fireworks work is simpler than initially though.
This is part of our Color unit.
Resources from this episode:
American Chemical Society
How Professional Fireworks Work (YouTube)
How do fireworks make their sound?
National Parks Service - Gunpowder
LA Times - Hospital colors
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At the risk of being awkward, this week we learn about how chickens make eggs! Things stay PG, but there is discussion of where eggs and chicks come from...as well as quite a bit of talk about food (which makes Cheryl happy). Come along and learn with us; it's never too late to learn about the world around you!
This is part of the Biology unit.
Resources from this episode:
Thank Chickens
Sciencing
Purina Mills
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Living in the Pacific Northwest, Cheryl & Ryan see a lot of evergreen trees. But why don't they lose their needles when trees with broader leaves do every winter? Learn the answer to this question as well as why evergreen trees are "the camels of the plant world" according to Cheryl in this week's lesson!
This is part of the Biology unit.
Resources from this episode:
EarthSky
Trees of the US Map
Coniferous Forest Map
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Where does eye color come from and how is it connected to a bunch of squares? Learn with Cheryl a bit of how complicated and fascinating the genetics of eye color can be, including why some traits are dominant and others are recessive.
This lesson is part of the Biology unit.
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Cheryl gets to talk about penguins again, look at pretty maps, and even has a special surprise at the end of the lesson. Oh, and learn a bit about biodiversity as well.
This is part of the Biology Unit.
Resources from this episode:
Biodiversity map
Plant biodiversity map
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What does it mean for food to be organic? Is Organic food healthier for you? And will this week's topic lead to Ryan ranting? Listen and find out!
This is part of the Biology unit.
Resources from this episode:
USDA Organic Labeling
USDA list of allowed substances
EPA Pesticide Regulations
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This week we answer another listener question, discover which bird would make the best villain, and find out which bird is Cheryl's favorite.
This is part of the Biology unit.
Resources from this episode:
TedEd
The Moa
Flying Penguins (funny)
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This week starts a new unit: Biology! We start with an overview of Biology and then quickly move into questions like: Why does Cheryl think she's like a platypus? What even is a platypus anyway, and is it even possible to classify it? And Ryan has a special surprise for Cheryl at the end.
This is part of the Biology unit.
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In the final lesson in our Hot & Cold unit, Cheryl learns how making ice cream, deicing roads, and antifreeze are connected. She also reflects back on what she's learned during the unit and how the concepts are connected.
Resources from this episode:
Wikipedia
Stack Exchange
Scientific American
Florida State University
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Why does licking a metal pole in the winter cause your tongue to stick to the pole? Why can ice from your freezer feel sticky? And what's different between Cheryl & Ryan's freezers? Learn the answers to these questions and more this week. It's never too late to learn about the world around you!
Resources from this episode:
New Your Times
Physics Stack Exchange
How Stuff Works
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Swing 39 by Latché Swing
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Why can you use the same liquid to burn warts off your foot as you do to make ice cream really quickly? And how can this mysterious substance let you be a dragon? Listen this week's lesson will answer this and more all about liquid nitrogen!
This lesson is part of the Hot & Cold unit.
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Popular at Halloween parties, what is that mysterious substance that gives off "smoke" and doesn't leave a puddle behind? Come along with Cheryl and learn what Dry Ice actually is and what makes it so unique!
This lesson is part of the Hot & Cold unit.
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Is it true the vodka can never freeze? Why would putting vodka in the freezer help it last longer? And why would whiskey be declared the winner by Ryan and Cheryl? Listen to this weeks episode to find out!
This lesson is part of the Hot & Cold unit.
Resources from this episode:
Alcohol & Whiskey Freezing Temperatures
States of Matter Simulation
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We've all seen water boil, but have you ever wondered why? Where do those bubbles come from, anyway? And what are they made of? Learn along with Cheryl about the answer to these questions and the wonders of phase changes!
This lesson is part of the Hot & Cold unit.
Resources from this episode:
States of Matter Simulation
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Revisiting a question Cheryl had from Lesson 2, we learn that molecules move, even in solids like a desk. But why? And how does that relate to the temperature of an object? Plus a surprise throwback to our childhood.
This lesson is part of the Hot & Cold unit.
Resources from this episode:
States of Matter Simulation
Bill Nye: Heat
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Swing 39 by Latché Swing
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Several movies and books predict disastrous results if the Moon were to get closer to Earth. We all know that ocean tides are caused by the Moon, but how does the Moon cause the tides? Listen to this week's lesson and learn with Cheryl!
Resources from this episode:
Tides Simulation
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Can you whistle? Do you know how whistling works? How similar is whistling to musical instruments? These questions and more will be answered in this week's lesson, along with some things to try yourself!
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What's so special about the "new" COVID-19 vaccines? Why are they different? And what exactly are vaccines, anyway? Learn along with Cheryl a bit about how our immune systems work and why vaccines are an impressive medical tool.
Note: this episode was recorded in July 2021.
Resources from this episode:
In a Nutshell Video about Vaccines
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A college professor once told Cheryl that its better (for you) to hit a pedestrian with your car than to hit another car or a telephone pole. Besides the moral implications, does this have any scientific backing? This week's lesson will answer that question!
Resources from this episode:
Eureka Inertia Cartoon
The Physics of Car Crashes
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Ever wondered where the salt in the ocean comes from? Or why rivers and streams aren't salty, but oceans are? This week Cheryl learns about what makes the oceans salty, as well as some well known salty lakes as well. The answer may surprise you.
References:
Why is the ocean salty - USGS
Why is the ocean salty - NOAA
Why is the ocean salty, but rivers flowing into it are not? - NOAA
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Have you ever wondered why Pluto isn't a planet anymore? Did Pluto get demoted? Do scientists have it out for the planet? Learn more about the history of what is considered a planet and how it's changed over time. Then decide for yourself: should Pluto be considered a planet?
Resources from this episode:
Solar System Scope (model)
How I Killed Pluto (book)
Is Pluto a Planet (YouTube)
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This week we answer our first listener question, Cheryl earns her first gold star, and we learn the value of humidifiers.
References:
Cleveland Clinic
Dear Science (Washington Post)
Healthline.com
Weather.com
Livescience.com
NPR
National Institute of Health
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Does Survival of the Fittest apply to an office environment? What exactly does it mean, where does it come from, and what does it have to do with bunnies? This week's lesson will fill you in!
Resources from this episode:
PhET Simulation
Cane Toads - An Unnatural History
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This week Cheryl shares one of her most vivid memories from middle school science about how to make a sugar cube dissolve faster. To explain this phenomenon, Ryan talks about phases of matter, molecules, and even uses some visuals!
Resources from this episode:
PhET States of Matter Simulation
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For our first lesson, Cheryl wants to know what a shooting star really is and in the process learns about asteroids and comets too!
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Hear a little bit about the idea for I Slept Through Science and what Ryan & Cheryl will be doing in this new podcast. New lessons every Monday!
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Theme Song:Swing 39 by Latché Swing
Licensed under a Attribution-Noncommercial-Share Alike 2.0 France License.
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