Chemistry For Your Life

Do atoms “want” full electron shells, do molecules “prefer” stability, and are electrons really “attacking” each other? Or could it be that while personifying molecules might be quietly teaching us the wrong ideas? Chemistry education researcher Jessie Stenlund joins Melissa and Jam to investigate anthropomorphism, analogies, scientific language, and why a satisfying explanation isn’t necessarily an accurate one. Along the way, Melissa reckons with learning that one of her strongest teaching opinions might need revisiting.

This week we issue a correction, joining other science publications issuing the same correction. That's kind of an obvious answer to the question of "Is science always right?" So in this episode we explore that question, as well as what happens when science isn't right. And why that's NOT a bad thing.

Can cooking pasta, rice, or bread, and then cooling it down, actually make it healthier? Could yesterday’s leftovers affect your blood sugar differently than a freshly cooked meal, or is this just another nutrition “hack” invented by the internet? Melissa and Jam investigate starch, glucose, insulin, digestion, crystallization, and the surprising chemistry that happens while your food sits in the fridge. Plus, the whole thing somehow turns into a Lord of the Rings battle involving glucose, hobbits, and ents, because of course it does.

What’s actually flowing through the “natural gas” pipes connected to your home—and did we get something wrong in our air-conditioning series? Which careers can an organic chemistry student pursue, how do topical pain-relief gels work, and what could make a successful HIV medication suddenly stop working? Melissa and Jam answer listener questions, revisit past episodes, correct the record, and stumble into a genuinely fascinating pharmaceutical mystery. Plus, could more chemistry history and chemistry-education stories be coming to the podcast?

Can shining a red light on your face really improve acne, wrinkles, inflammation, or wound healing, or is red light therapy just an expensive skincare scam involving a slightly alarming mask? How could ordinary visible light affect cells beneath your skin, and should you trust the products filling your social media feed? Melissa and Jam investigate photobiomodulation, mitochondria, collagen, blue light, FDA clearance, and the research behind this increasingly popular wellness trend. The answer is more scientifically interesting, and more complicated, than either of them expected.

Melissa finally explains to Jam how microwaves work after making him wait for an entire week. What the heck is going on inside microwaves? How does it do it's thing and make our food tasty? Is it magic?

What happens when a chemist and a non-chemist make a podcast together for seven years? Which chemistry lessons stuck, which episode ideas spectacularly refused to cooperate, and does Jam still count as a layperson after all this time? Joined by returning guest Claire, Melissa and Jam celebrate the seventh anniversary of Chemistry For Your Life with listener questions, behind-the-scenes stories, friendship reflections, favorite science facts, and one very large chemistry cookie cake. Come for the chemiversary; stay for the long-running argument about reality TV.

What exactly is a swamp cooler, and why can it beat the heat in Arizona but leave you sweaty and betrayed in Houston? How can an air conditioner run on water, what does humidity have to do with its effectiveness, and could an icy new invention help prevent overloaded power grids? In the final installment of our air-conditioning series, Melissa and Jam explore evaporative cooling, ancient climate-control tricks, and some promising innovations for a hotter world. It turns out “It’s not the heat, it’s the humidity” is more scientifically accurate, and more annoying, than we’d like.

Could a cheaper, more environmentally friendly refrigerant already exist, and could corporate lobbying be helping keep it out of American air conditioners? Why did the chemicals once hailed as safe alternatives become environmental villains, and are their replacements actually much better? Melissa and Jam follow the twisty history of Freon, ozone depletion, greenhouse gases, propane, and air-conditioning regulations to find out why choosing a refrigerant is never as simple as “this one works.” Grab your red string and conspiracy board, because the chemistry drama is heating up.

What happens when a chemist ventures onto Reddit to answer the internet’s most pressing science questions? Why does carbon get its own entire branch of chemistry, what makes fireworks burn different colors, and can an invention work even when its inventor has no idea why? Melissa and Jam tackle those mysteries, plus laboratory disasters, stress recovery, wireless charging, and one surprisingly complicated “Am I the Jerk?” dilemma. It’s chemistry support for the internet, because Reddit clearly has plenty of need for it.

Is your air conditioner secretly doing chemistry while you’re inside pretending summer doesn’t exist? How does it turn hot air into cool air, and why does part of the AC blow out even more heat? In this episode, Melissa and Jam crack open the mysterious black box of air conditioning to explore refrigerants, phase changes, energy transfer, and the surprisingly clever science keeping your house livable. Plus: frozen AC coils, summer survival drinks, and the beginning of Hibiscus Girl Summer.

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.

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 what Melissa found as she dove deep into the question "Why do people hate organic chemistry?" for the past few years.

What if the biggest challenge in chemistry education isn’t helping students survive—but helping them thrive? In this final bonus episode of our BCCE Community Conversation series, Melissa talks with Leyte Winfield about creating learning environments where students feel like they belong. They discuss moving beyond “weed-out” culture, designing courses that maintain high standards while expanding opportunity, and why the future of chemistry depends on empowering talented students rather than simply filtering them out. It’s a fitting conclusion to a series all about rethinking how we teach and learn chemistry.

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!

How do we build chemistry classrooms where more students can thrive? In this bonus BCCE Community Conversation preview, Melissa talks with Matt Mio about neurodiversity in chemistry education. They discuss why every student experiences learning differently, how understanding those differences can make us better teachers and colleagues, and why creating more accessible learning environments benefits far more people than we might expect. It’s a thoughtful conversation about curiosity, empathy, and what it means to teach the whole student.

Hairspray seems simple… until you actually stop and think about it. How does it come out as a fine mist? Why doesn’t it dry up inside the can? How can it hold your hair in place without acting like glue? This week we’re unpacking the surprisingly clever chemistry behind one of the most common products in our homes—and discovering it’s far more complicated than either of us expected.

Great teaching doesn’t happen in isolation—it happens in community. In this bonus BCCE Community Conversation preview, Melissa talks with chemistry educator Dr. Joanne Stewart about communities of practice: groups of educators who come together to share ideas, solve problems, and help one another grow. They explore why teaching is hard to improve on your own, how these communities support both faculty and students, and why meaningful change in chemistry education depends on building relationships, not just sharing resources.

What happens when some listeners challenge one of our past episodes? This week we’re revisiting our silicone episodes after several listeners pointed us toward new research. Along the way we answer questions about mosquito wristbands, waterproof mascara, stubborn adhesives, and whether amino acids may have formed on the early Earth after all. It’s an Ask a Chemist episode full of updates, follow-ups, and a reminder that science is always a work in progress.

What if chemistry classes were organized around real-world problems instead of chapters in a textbook?In this bonus BCCE Community Conversation preview, Melissa talks with Vicente Talanquer about helping students think like chemists rather than simply memorize chemistry. They explore why authentic, real-world problems can transform learning, how instructors can make meaningful changes without rewriting an entire course, and why teaching chemistry is about developing a way of thinking—not just delivering content.

There are a lot more ways to reveal a fingerprint than the black powder you see on TV. In this second part of our forensic chemistry series with Nicki Stewart, we explore the surprising chemistry behind fingerprints. From powders and iodine vapor to super glue fumes and chemical reactions, we break down how forensic scientists reveal invisible fingerprints—and why choosing the right method depends entirely on the surface, the chemistry, and the evidence they’re trying to preserve.

What does it mean to teach chemistry like a scientist? In this BCCE Community Conversation preview, Melissa talks with chemistry education researcher Ellen Yezierski about scholarly teaching: making evidence-guided decisions about how we teach and how students learn. They discuss why content knowledge alone isn’t enough, how educators can improve their teaching without becoming full-time researchers, and why some of the best chemistry teaching ideas come from asking better questions about learning.

Be honest. Have you ever glued yourself with super glue? Everyone should accidentally make that mistake at least once, so you can literally feel the impressive stickiness of super glue. Well today, you can learn about the chemistry within super glue, without putting any fingers or other body parts at risk! Let's do this.

AI is everywhere in education right now, but is that the only technology chemistry educators should be thinking about? In this bonus BCCE preview episode, Melissa talks with Resa Kelly about technology in chemistry education, from visualizations and videos to flipped classrooms and AI. What do we actually want students to be able to do in a technology-rich world? How should that shape our teaching? And how can educators stay curious without feeling pressured to adopt every new tool that comes along?

CSI makes forensic science look fast, easy, and almost magical. But how much of that is actually true?This week we’re joined by forensic chemist and graduate student Nicki Stewart to answer your questions about forensic science. We talk about crime shows, fingerprints, toxicology, illicit drugs, and what really happens inside a forensic laboratory. Plus, Nicki shares what surprised her most when she worked in a real crime lab and why forensic science is often much slower (and more complicated) than TV would have you believe.

What happens when the world’s largest gathering of chemistry educators decides to try something new? This summer we’re partnering with the Biennial Conference on Chemical Education (BCCE) for a special series of Monday episodes. In this kickoff conversation, Melissa sits down with conference organizers to talk about the vision behind this year’s event, why community conversations are replacing traditional keynotes, and how chemistry educators are thinking about the future of teaching and learning. Whether you’re attending BCCE or just curious about how people learn chemistry, this episode offers a behind-the-scenes look at one of the biggest conversations happening in chemistry education today.

How can the same element make both pencil lead and diamonds? This week we wrap up our pencil chemistry mini-series by answering a surprisingly tricky question: how do erasers actually erase? Then we dive into one of chemistry’s coolest ideas. Graphite and diamond are both made entirely of carbon, but one is soft enough to write with and the other is the hardest natural material we know. What changed? The answer reveals something remarkable about chemistry, structure, and the hidden world of atoms.

Gemstones come in all sorts of colors, but how do they get them? Are different stones super different at the molecular level? How do these different colors happen naturally? And how can those colors be replicated in lab-made gemstones? Let's get into it.

Why does a pencil work so perfectly? Why does graphite leave marks on paper instead of just crumbling apart? And what do pancakes, honeycombs, geckos, and intermolecular forces have to do with any of it? This week we follow a simple pencil all the way down to carbon atoms, graphene sheets, and the weirdly satisfying chemistry that makes writing possible. Plus: final exam horror stories, missed alarms, and why reading the syllabus might save your GPA.

What happens when you mix bleach and ammonia? Why does perfume smell amazing on one person and weird on another? And why is getting a job so hard right now? This week we’re answering a huge batch of listener questions about chemistry, sunscreen, scents, books, careers, birds, and somehow even British accents. Plus, we accidentally brainstorm several new podcast ideas along the way.

How do you turn a weird cloudy liquid into something stronger than steel? This week we’re telling the story of Kevlar: the chemistry breakthrough that led to bulletproof vests, firefighter gear, reinforced tires, and so much more. Along the way we talk polymers, hydrogen bonding, accidental discoveries, and the chemist who almost went to medical school instead.

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.

When a retired chemist wrote in… we had to explore to his great questions. How does reverse osmosis actually work? Should you put aluminum foil in your dishwasher? Why do mixed powders mysteriously un-mix themselves? This episode is full of clever questions, surprising chemistry, and very strong contributions from listener Vince!

You asked… so we answered. What do carbon chains have to do with Greek words? How do MRIs make “3D pixels”? Is that pool smell actually chlorine? And wait… are birds blue, or is that just a trick of the light? This episode is a rapid-fire round of your questions, and the chemistry behind them.

You’ve seen it a hundred times… but how does it actually work? Why do diapers change color when they’re wet? What kind of chemistry is happening in there? And how does something as simple as pee trigger such a dramatic color shift? Let’s talk acids, bases, color, and one surprisingly deep piece of everyday science.

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.

What does compost have to do with eggs? How are birds basically doing chemistry experiments to make their colors? Why would a bird eat dirt… or rub ants all over itself?? This episode is a grab bag of wild, fascinating bird facts that connect back to chemistry you already know. No quiz, just vibes.

This week, Melissa and Jam revisit one of their fav episodes on the topic of mosquitos. What is DEET? What part does it play in repelling mosquitos? How do repellants repel mosquitos in the first place? Is it just straight witchcraft? Let's do it.

Birds fly all the time. We see it constantly. But how does it actually work? Is it just "Bernoulli’s" principle? Is the air pushing up? Are the wings pushing down? And what’s happening at the molecular level when a bird takes off? Let’s talk about feathers, airflow, collisions between air molecules, and why the way flight is usually explained might not actually be the whole story.

In this bonus episode, we host a rematch of our game “Fun Fact or Fake Factoid” with Claire and Jam, using stricter rules: each claim must be entirely true or false as worded, and the winner earns a treat. We test statements about pregnancy-related brain changes, koala fingerprints, bird body temperature, whether every fig contains a dead wasp, how egg markings form, woodpecker tongues wrapping around their skulls, unique parrot pigments, bald eagles’ ability to take off from the ground, black bear maternal instinct, and whether red bird color is structural rather than pigment-based.

MRIs are loud. They’re huge. They’re magnetic. But what are they actually doing? This week, we bring Claire back to help us connect the dots between NMR (yes, organic chem flashbacks) and MRI. How does a technique built on tiny hydrogen protons turn into a 3D image of your brain? How can it tell the difference between tissue and fluid? Why can’t you bring metal anywhere near the machine?

Glass. The more you look at it, the more clear it becomes that it holds some serious mysteries. So what really is glass? Is it a liquid? How is it different from typical solids? Does it flow and ooze over time? Is that why old windows are thicker at the bottom? Let's find out!

Why is ice so slippery? Is it because of a layer of water on top, or is it something more complex? Join Melissa, a chemist, and her non-chemist friend Jam as they dive into the chemistry behind icy surfaces, inspired by a curious 5-year-old's question. You'll hear about experimental findings, the special properties of water, and even some amusing snow day memories. Perfect for anyone who's ever wondered why ice makes us slip and slide!

Why can birds sit on electrical wires without getting shocked? What's the chemistry behind cake mix versus baking from scratch? Why do some materials create more fire than others? Melissa and Jam tackle these questions and more, drawn from curious listeners and the 'Explain Like I'm Five' subreddit, in this engaging episode of Chemistry for Your Life. Plus, find out how popular TV shows might be influencing career choices and explore the fascinating world of chemical reactions. Got a burning question? Tune in and satisfy your curiosity with Chemistry for Your Life!

Winter has us longing for warmer weather. BUT when it's a hot day how do fans keep us cool? Do fans actually lower the air temperature? What role does evaporative cooling play? Find out how the movement of air molecules around your body is the key to feeling cooler. Plus, discover some fascinating insights into energy distribution, the impact of fans on air conditioning, and even some fun personal anecdotes about staying cool in the Texas heat.

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.

What makes wool an essential fabric for many people? Is lanolin truly antimicrobial, or is wool itself responsible for its famed properties? Join us as we unravel the complexities of wool and lanolin, diving into its chemical structure, historical anecdotes, and surprising anti-odor capabilities. Does wool really keep the bacteria at bay, or is there more to the story? Tune in and explore the chemistry behind this wonder fabric!

Melissa and Jam dive into a series of fascinating chemistry questions submitted by listeners. They explore how food affects the absorption rate of alcohol in the blood, the science behind shelf-stable milk turning solid after opening, and why dogs' feet might smell like Fritos. The duo also answers an intriguing question about the risks of dental X-rays versus ultraviolet radiation from the sun. Additionally, they discuss a fun science experiment involving dissolving candy canes in different liquids, providing a perfect activity for kids to learn about the world of chemistry. Special thanks to the community members and listeners whose questions keep the show engaging and informative.

Who's doing what to our salt? What's iodine, do we need it, why, and how do they get it in there? This week Melissa and Jam dive head first into figurative iodized salt dunes. Let's take a closer look at the chemistry of something so everyday, we hardly even think about it.

In this festive episode, Melissa and Jam delve into the fascinating science behind why ribbons curl when pressed against a blade. The discussion covers polymers, their molecular structures, and the forces at play during this process. With a blend of personal holiday memories and a detailed analogy involving crocheted yarn, the duo makes complex chemistry accessible and fun for all listeners. They also share their favorite holiday traditions and movies, making this episode a blend of heartwarming stories and educational content.