Displaying episodes 1 - 30 of 206 in total

What do catalytic converters do?

Cars are complicated, there's lots of parts that do lots of things most of us will probably never understand it all. Well we can at least tackle one of those mysteries...

What's up with alcohol(s)?

So we all know what we think of when we hear the word "alcohol," but what if that's not really the whole picture? There's actually many kinds of alcohol, most of which...

What is gasoline?

For many of us, gasoline is just another everyday thing. It's essential, but we don't give it much thought. But how does it work? What is it made up of? Why are there ...

Bonus: How does gel nail polish dry under UV light? (and other questions)

In this month's bonus episode, Melissa and Jam respond to comments and questions about tattoos, viscosity, humidity, life updates, and more!

How are tattoos removed?

So a couple weeks ago we talked about how tattoos are permanent. But what if you don't want your tattoo to be permanent any more? You won't get any judgement from us. ...

How do geckos stick to walls?

This week Melissa and Jam continue in the category of "sticky" things by exploring how geckos stick to walls. How do they do it? Is it magic? Is it like spider-man? Is...

Why are tattoos permanent?

Tattoos go back centuries across many cultures, and yet their chemistry is still an absolute mystery to most of us. How do tattoos work? What is the ink made of? How d...

Bonus: How much does a polar bear weigh? (and other questions)

In this month's bonus episode, Melissa and Jam do something a little different. Because they're needing to record quite a bit ahead of time, this Q&R couldn't be a...

Why does ice float on water?

Ice is water right? It's just that it's solid. So why does it float in liquid water? And also why does water expand when it freezes, when typically things contract whe...

What is sea level rise? (with Dr. Renee Collini)

This week, Melissa, Jam, and very special guest Renee Collini (Melissa's sister and climate scientist) delve into the important topic of sea-level rise. What causes it...

What is the chemistry of volcanoes?

The crazy, insane, scary, fascinating world of volcanoes is fully of chemistry! What is lava/magma? Why do some volcanoes ooze and others erupt? What causes the magma ...

Why are sand and water different temperatures at the beach?

Many of us have been in a situation where we are near a body of water (lake, ocean, pool etc), and you may have noticed that no matter what the temperature is outside,...

What is wind?

Wind is everywhere, we've all experienced it: soft breezes, strong gusts, cold fronts, warm fronts. But what is wind? What starts it? Where does it come from, and wher...

Bonus: Where does sand come from? (and other questions)

In this month's bonus episode, Melissa and Jam respond to comments and questions about CO2 and mosquitos, sand, light scattering, cooking eggs, and more!

What is lightning?

Lightning is something we're all used to. It's always just been an odd part of life. But think for a second, what even is it? It's just electricity, hanging out in the...

What do rainbows and mirages have in common?

This week, Melissa and Jam explore three very different, but related, light phenomena. We'll discuss situations when light can be bent, slowed down, and even broken. I...

What are clouds? And why do they look white?

Clouds. So fluffy. So wispy. So mysterious. What are they really? Why do they look white? How do they hold so much water for so long? Why do they float?

Bonus: Why is caffeine in shampoo? (and other questions)

In this month's bonus episode, Melissa and Jam respond to comments and questions about shampoo, microplastics, misunderstood chemicals, sports teams, ADHD medications,...

Why do people hate organic chemistry?

Well guess what, Melissa is a PhD Doctor now! And you know what that means? She gets to tell us more details about the research she did to get her PhD. Listen to hear ...

How can sunlight turn into electricity?

This week, Melissa and Jam explore the chemistry of solar energy. How do we capture energy from the sun and turn it into electricity? Is it as super insanely cool as i...

How do ADHD and Adderall™ change the chemistry in our brains?

Well newsflash, the brain is complicated. And a surprising amount of what's going on in our brains is chemistry. But what about ADHD? What's happening in the chemistry...

Bonus: Animals have tears? (and other questions)

In this month's bonus episode, Melissa and Jam respond to comments and questions about lobsters, crying, lightening, colored fire, and more!

Is crying chemistry? (the fascinating science of tears)

Have you ever wondered what tears are? If not, is it because you think you already know? Chances are, you don't actually know what tears are! It's probably more comple...

Why does rain smell?

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 a...

Why do lobsters turn red? (when we cook them)

When you think of lobsters, you probably always imagine them being red. But they're only actually red after they die, or more specifically, after we cook them. Why? Is...

Bonus: What do sunscreen and paint have in common? (and other questions)

In this month's bonus episode, Melissa and Jam respond to comments and questions about soda bubbles, mentos, raisins, sunscreen, and more!

Why do sodas explode? (when we shake them)

We've all shaken up a carbonated drink, either accidentally or on purpose, so we all know what happens. But why? Why does simply shaking it agitate the carbonation so ...

Why is the sky blue?

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 ther...

Bonus: Chemistry and Greek myths? (and other questions)

In this month's bonus episode, Melissa and Jam respond to comments and questions about greek myth analogies, hydrogen peroxide, benzoyl peroxide, alkaline water, coffe...

Why do we use hydrogen peroxide? (and should we?)

For many people, hydrogen peroxide has been an essential first aid tool. Should it be? And before we answer that question, what even is hydrogen peroxide? How does it ...

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