Displaying episodes 61 - 90 of 119 in total

What is a calorie?

This week, Melissa and Jam question the whole system of food. Or rather, the way we calculate food: calories. What are they? Where'd the come from? How are they calculated? Is it a good system for measuring food? What does it actually measure? Can we calculate calories in food at home? Let's dig in.

Bonus: What is Mel's cast iron routine? (and other questions)

In this month's bonus episode, Melissa and Jam respond to comments and questions about cast iron routines, dyes, activating almonds, and inspirations behind their respective interests.

What is rust and is it the worst?

A somewhat natural chemical topic following cast iron: rust. This week, Melissa and Jam explore the chemistry of rust. What even is it? Where does it come from? Is it bad? Is it reversible? Let's get into it.

Black lives matter

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Are cast iron pans as cool as people say?

The continuation of the unexpected cookware chemistry saga: cast iron. This week, Melissa and Jam discuss multiple aspects of cast iron chemistry. What is cast iron? Why do some people love it so much? How does it work? Is it better than other cookware? If you haven't listened to our two teflon "prequel" episodes, click here!

Chemistry at home: Homemade Lava Lamp

What's this, another bonus episode? It's something new we're test driving! A short little extra bonus episode dedicated to teaching a specific chemistry experiment you can do at home. This month, the experiment is how to turn some simple household items into a sort of cool, colorful lava lamp! Let us know what you think of this type of episode. Do you like and want more of these? Is there a way we could make them better? Let us know!

Why do diet coke and mentos do that thing?

You know what we're talking about. That spectacular fizzy geyser. This week, Melissa and Jam explore what makes diet coke and mentos go crazy together. Is it love? Is it hate? Is it chemistry? Why diet coke specifically? Or more importantly, why mentos? Let's get into it.

Bonus: My girlfriend's sweat doesn't stink (and other questions)?

In his month's bonus episode, Melissa and Jam respond to comments and questions about sunlight bleaching, weird feeling soap, sweat and smells, popcorn, and more!

How do color-changing mugs change color?

You know how you have that one mug that changes colors when you put hot coffee in it? Let's talk about that. This week, Melissa and Jam explore the chemistry of color changing items. Or rather, a specific item, a Mister Rogers mug Jam's wife has. How do items like this change color? How can heat cause changes like that? And how can it happen over and over again? Also why?

How do deodorant and antiperspirant work?

What's that smell? Is it us? Is it you? We hope it's neither, thanks to deodorants and antiperspirants. This week, Melissa and Jam delve into the chemistry of this everyday important substance. What are the differences between deodorant and antiperspirant? How do they work in the first place? Does one work better? Is one better for us? Be kind to one another, wear deodorant.

Is it safe to use teflon pans?

Ok! So now that you know how teflon works (see last week's episode if you missed it), now it's time to discuss the equally important question: is it safe to use?? Are there any potential side-effects to using it? Can scratching teflon cause it to have an affect on our food, or even worse, on us? If there are potential dangers to teflon, is there any way to avoid them? Help! This week, Melissa and Jam delve into this topic, and tiptoe through the allegations to give you some things to consider when choosing you next pots and pans.

Bonus: Do purple carrots have beta carotene (and other questions)?

In his month's bonus episode, Melissa and Jam respond to comments and questions about carrots, pigments, quinones, thermoses, and unscientific theories about why the sky is blue.

What makes nonstick pans not sticky?

Who you calling sticky? This week, Melissa and Jam open up another two-part series about nonstick pans, aka teflon. What keeps food from sticking to them? How did scientists figure out how to create it? How can something that doesn't stick to anything be coated on the bottom of a pan? Are there any potential downsides to teflon? Let's get nonsticky.

How does helium change your voice?

Part two on the chemistry of helium! Now to the question you've all been wondering, how does helium change your voice? This week, Melissa and Jam explore this mystery, which begs a lot of other questions. What even is the human voice? What's it made up of? And how does just introducing a gas like helium affect it at all? Let's find out together!

Bonus: Podcast For Your Life - Books for your life

Don't worry, you didn't click on the wrong podcast. This week Melissa was a guest on another "for your life" podcast: Podcast For Your Life, Jam's original podcast with his friend Jason Cress. So we thought we'd share this crossover as a bonus for this week! Listen to hear Jason, Jam, and Melissa attempt to get to the bottom of what is and is not a book. Read more about Podcast For Your Life below.

Is there a helium shortage?

Helium is all fun and games right? High voice, super funny, no worries right? Or is there a serious shortage of helium? This week, Melissa and Jam answer this question. But we can't stop there. This is part one of two episodes about helium.

Why does orange juice taste bad after you brush your teeth?

It's the lesson we've all had to learn the hard way. The pain our mouths feel when we take a treacherous swig of the post-brush poison. This week, Melissa and Jam delve into all of our childhoods to figure out the chemistry of this infamous mixture. Why does it taste so bad? Who's fault is it, the toothpaste or the orange juice? Also while we're at it, why is it called toothpaste? Nevermind, I'm not sure we'll be able to get to the bottom of that part.

How does soap kill COVID-19?

Ok so we've known for awhile how soap works in a general use sense, like how it cleans dishes (see episode 1). But these weird times call for a deeper look at soap. How can it kill a virus? Or more importantly, how can it kill a little, wretched, mischievous virus like COVID-19? Like really, how? How is it that we can use soap to both get spaghetti sauce off a plate, and kill a dangerous virus? We're always told to wash our hands well, and that it's important, but if you think about it for a second, it's crazy that we put something on our hands, and rub them together under water, and then we're good to go. Right? Let's get into it.

Why do apples turn brown when you cut them?

Do you like apples? Ever wonder why they turn brown when you cut them? This week, Melissa and Jam explore this very question. What's going on in these apples? Where does the brown come from? Is it a good or bad thing? Does it taste different? Is the brown actually apple tears from the pain of being cut?

Bonus: Methane doesn't have a smell (and other questions)?

In his month's bonus episode, Melissa and Jam respond to comments and questions about methane, bad smells, bleach, computers seeing colors, crystal formation, and more!.

Why is the sky blue but sunsets aren’t?

This week, Melissa and Jam explore the oldest question in the book. But we're not going to answer it. Just kidding. Why the HECK is the sky blue? And also why are there times that it isn't? Sunrise? Sunset? Nightime? Sky, what are your mysteries? Tell us your secrets. Hide not your face from me.

How do thermoses keep coffee hot?

That's right, we are sort of talking about coffee this week. Or rather, how to keep it hot. Nowadays we all have some version of a thermos for our coffee, tea, water, or what-have-you. Today Melissa and Jam try to get to the bottom of how those work. How do they keep things hot and cold? What's between the two layers (or whatever) and how is it so good at insulating? Is it a vacuum? Can someone please tell me what the heck is going on?

How do hand warmers get hot?

This week, Melissa and Jam investigate reusable hand warmers. How do they get hot? Where does the heat even come from? How do reusable ones even work? Is it real? How can heat just come out of nowhere like that?

How does bleach remove color?

How does bleach bleach stuff? Oh and also, what even is color? This week Melissa and Jam investigate these questions. What's the molecular makeup of color and then how does bleach alter that? How does bleach have enough power to ruin that hoodie you just bought? How could you have been foolish enough to handle bleach while wearing your new hoodie?

Bonus: Does cold exist (and other questions)?

In his month's bonus episode, Melissa and Jam respond to comments and questions about cold/cool, water temperature's effect on boats, vapor pressure, smells, hair, and how this podcast even got started.

Why do bad smells smell bad?

Melissa and Jam continue to sniff out the chemistry of smell, focusing this week on bad smells. Why are we so good at smelling bad smells? Why do they haunt us at night? Why are some bad smells so strong and long lasting, while many great smells are subtle and temporary. What’s in a smell? "That which we call a rose by any other name would smell as sweet." I think that quote applies here right?

How do we smell things?

What's that smell? This week, Melissa and Jam explore the chemistry of smell. Now a lot of smell science has to do with our physiology and neurology. We'll talk some about that, but the chemistry has to do with the actual smells in the air. What are they? How do they get into the air? How can we detect them with our noses and brains? Why does rain have a smell, and why does it smell good? Let's find out.

What’s really happening when our hair gets damaged?

This week, Melissa and Jam travel even further down the rabbit hole of hair chemistry. How does our hair get damaged? How do we curl, straighten, and perm our hair? What's going on there at the molecular level? Let's find out!

What gives curly hair its curl?

This week, Melissa and Jam dive into the chemistry of something that may not seem like chemistry at first: hair. Curly hair to be specific. What makes hair curl? Also what is hair in the first place? Why can hair be so radically different? Alright curly girls, curly guys, and curly folks, let's find out.

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