Chemistry For Your Life

Epizode

• How does a pencil eraser remove graphite? 04.06.2026 35min

  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.
• How do gemstones get their color? 28.05.2026 44min

  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.
• How do pencils write on paper? 21.05.2026 46min

  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.
• Ask a Chemist: What things should you never mix? (and other questions) 14.05.2026 34min

  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 was kevlar accidentally invented? 07.05.2026 48min

  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.
• Is there a helium shortage? 30.04.2026 39min

  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.
• How does reverse osmosis actually work? 23.04.2026 38min

  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!
• Ask a Chemist: Is That Pool Smell Actually Chlorine? (and other questions) 16.04.2026 32min

  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.
• How do diapers change color when wet? 09.04.2026 50min

  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.
• How do deodorant and antiperspirant work? 02.04.2026 46min

  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.
• More bird chemistry?! 26.03.2026 35min

  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. 
• What even is DEET? 19.03.2026 37min

  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.
• How do birds fly? And how is chemistry involved?! 12.03.2026 40min

  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.
• Fun Fact or Fake Factoid?! Game Rematch (with Claire Caballero) 05.03.2026 33min

  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.
• How do MRIs see inside our bodies, in 3D? (with Claire Caballero) 27.02.2026 1h 9min

  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?
• Is glass actually a liquid? 19.02.2026 32min

  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!
• What makes ice slippery? (A surprising science mystery) 12.02.2026 52min

  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!
• Reddit Chemistry: Why don't birds get shocked on power lines? (and other questions) 05.02.2026 40min

  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!
• How do fans cool us off? 29.01.2026 27min

  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.
• Why does orange juice taste bad after you brush your teeth? 22.01.2026 28min

  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.