#042

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.

References from this episode

1. Individual and gender fingerprints in human body odour – Dustin J Penn, Elisabeth Oberzaucher, Karl Grammer, Gottfried Fischer, Helena A Soini, Donald Wiesler, Milos V Novotny, Sarah J Dixon, Yun Xu, and Richard G Brereton
2. What are deodorants and antiperspirants, and how do they fight sweat? - Everts, Chemical and Engineering News
3. Studies of trans 3 methyl 2 hexenoic acid in normal and schizophrenic humans - S. G. Gordon, K. Smith, L. Rabinowitz, P. R. Vagelos, Journal of lipid research
4. Breast Cancer and Deodorants/Antiperspirants: A Systematic Review
5. Aluminium, antiperspirants and breast cancer
6. The mechanism of eccrine sweat pore plugging by aluminium salts using microfluidics combined with small angle X-ray scattering. - Bretagne A, Cotot F, Arnaud-Roux M, Sztucki M, Cabane B, Galey JB.

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References from the Episode:

Thanks to our monthly supporters

• Amanda Raymond
• Emily Morrison
• Kyle McCray
• Justine
• Emily Hardy
• Ash
• Vince W
• Julie S.
• Heather Ragusa
• Autoclave
• Dorien VD
• Scott Beyer
• Jessie Reder
• J0HNTR0Y
• Jeannette Napoleon
• Cullyn R
• Erica Bee
• Elizabeth P
• Rachel Reina
• Letila
• Katrina Barnum-Huckins
• Suzanne Phillips
• Venus Rebholz
• Jacob Taber
• Brian Kimball
• Kristina Gotfredsen
• Timothy Parker
• Steven Boyles
• Chris Skupien
• Chelsea B
• Avishai Barnoy
• Hunter Reardon

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Birds… but chemistry.
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.

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00:00 Bird Chemistry Vibes
02:02 Compost Egg Incubators
02:58 Feather Colors Chemistry
06:20 Seeing Ultraviolet Light
08:11 Clay Eating Detox Trick
09:28 Hot Bodies Fast Reactions
14:23 Preening Oil Waterproofing
16:15 Rainy Day Birdwatching
16:44 Anting Bird Hygiene
19:17 Seabird Feather Sunscreen
20:14 More Bird Chemistry Ahead
20:41 Bird Phobia Banter
21:19 Documentary Media Swap
22:22 Mississippi Kite Swoops
28:19 Do Birds Recognize Faces
31:12 Photo IDs and Backyard Hawks
32:34 Chicken Show Family Lore
33:00 Wrap Up and Support

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References from the Episode:

Thanks to our monthly supporters

• Amanda Raymond
• Emily Morrison
• Kyle McCray
• Justine
• Emily Hardy
• Ash
• Vince W
• Julie S.
• Heather Ragusa
• Autoclave
• Dorien VD
• Scott Beyer
• Jessie Reder
• J0HNTR0Y
• Jeannette Napoleon
• Cullyn R
• Erica Bee
• Elizabeth P
• Rachel Reina
• Letila
• Katrina Barnum-Huckins
• Suzanne Phillips
• Venus Rebholz
• Jacob Taber
• Brian Kimball
• Kristina Gotfredsen
• Timothy Parker
• Steven Boyles
• Chris Skupien
• Chelsea B
• Avishai Barnoy
• Hunter Reardon

Check out our website at chemforyourlife.com

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#053 Rebroadcast

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.

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References from this episode

1. Staph Retreat - Radiolab - WYNC
2. https://www.acs.org/content/acs/en/education/whatischemistry/landmarks/rachel-carson-silent-spring.html
3. https://www3.epa.gov/pesticides/chem_search/reg_actions/reregistration/fs_PC-080301_1-Apr-98.pdf
4. https://www.scientificamerican.com/article/is-it-true-that-the-deet/
5. https://pubmed.ncbi.nlm.nih.gov/24892824/
6. https://pubmed.ncbi.nlm.nih.gov/11693870/
7. https://pubmed.ncbi.nlm.nih.gov/26827259/
8. https://www.cell.com/current-biology/fulltext/S0960-9822(19)31167-4?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0960982219311674%3Fshowall%3Dtrue
9. https://www.cell.com/current-biology/fulltext/S0960-9822(19)31167-4?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0960982219311674%3Fshowall%3Dtrue
10. https://cen.acs.org/biological-chemistry/biochemistry/does-DEET-fend-off-malaria/97/web/2019/10

Thanks to our monthly supporters

• Amanda Raymond
• Emily Morrison
• Kyle McCray
• Justine
• Emily Hardy
• Ash
• Vince W
• Julie S.
• Heather Ragusa
• Autoclave
• Dorien VD
• Scott Beyer
• Jessie Reder
• J0HNTR0Y
• Jeannette Napoleon
• Cullyn R
• Erica Bee
• Elizabeth P
• Rachel Reina
• Letila
• Katrina Barnum-Huckins
• Suzanne Phillips
• Venus Rebholz
• Jacob Taber
• Brian Kimball
• Kristina Gotfredsen
• Timothy Parker
• Steven Boyles
• Chris Skupien
• Chelsea B
• Avishai Barnoy
• Hunter Reardon

Check out our website at chemforyourlife.com

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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.

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00:00 Rematch Setup
00:42 Rules and Stakes
02:46 Pregnancy Brain Changes
05:55 Koala Fingerprints
07:48 Bird Body Temperature Myth
11:26 Fig Wasp Debate
15:33 Egg Markings Explained
16:53 Egg Pigment Mystery
17:57 Woodpecker Tongue Wrap
19:13 Tie Breaker Rules
20:26 Parrot Pigment Class
21:18 Eagle Takeoff Myth
24:27 Bear Instinct Debate
25:19 Bird Color Science
29:54 Rematch And Submissions
31:21 Support And Credits

References from the Episode:

Thanks to our monthly supporters

• Amanda Raymond
• Emily Morrison
• Kyle McCray
• Justine
• Emily Hardy
• Ash
• Vince W
• Julie S.
• Heather Ragusa
• Autoclave
• Dorien VD
• Scott Beyer
• Jessie Reder
• J0HNTR0Y
• Jeannette Napoleon
• Cullyn R
• Erica Bee
• Elizabeth P
• Rachel Reina
• Letila
• Katrina Barnum-Huckins
• Suzanne Phillips
• Venus Rebholz
• Jacob Taber
• Brian Kimball
• Kristina Gotfredsen
• Timothy Parker
• Steven Boyles
• Chris Skupien
• Chelsea B
• Avishai Barnoy
• Hunter Reardon

Check out our website at chemforyourlife.com

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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?

We ask:
• What are your protons doing inside an MRI?
• How does “magnetic resonance” become an image?
• Why does oxygenated blood matter?
• And how did anyone figure this out in the first place?

If you’ve ever had an MRI, or just wondered how we can see inside the body without radiation or surgery, this episode pulls back the curtain.

Listen in and rethink what’s happening inside that giant magnet.

00:00 MRI Episode Kickoff
01:11 Meet Claire Again
02:27 PhD Candidate Explained
03:44 NMR Basics Begin
04:33 Protons And Magnets
06:46 RF Pulse And Signal
11:16 Hydrogen Everywhere
13:35 Reading NMR Peaks
16:02 Matrix And Practice
18:31 Jam Summarizes NMR
20:44 Why MRI Not NMR
22:45 Spin And Isotopes
29:02 MRI Uses Body Water
30:37 Tissue Contrast And T1
33:38 Resolution Limits
34:25 MRI Resolution Limits
35:34 From NMR to Images
36:50 K Space and Gradients
41:30 Voxels and 3D Views
44:05 Contrast and Clinical Uses
49:47 Research Possibilities
51:11 Functional MRI Explained
56:14 MRI Safety and Magnet Strength
58:00 Helium and Heavy Machines
01:02:43 Science Boundaries and Wrap Up

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References from the Episode:

Thanks to our monthly supporters

• Amanda Raymond
• Emily Morrison
• Kyle McCray
• Justine
• Emily Hardy
• Ash
• Vince W
• Julie S.
• Heather Ragusa
• Autoclave
• Dorien VD
• Scott Beyer
• Jessie Reder
• J0HNTR0Y
• Jeannette Napoleon
• Cullyn R
• Erica Bee
• Elizabeth P
• Rachel Reina
• Letila
• Katrina Barnum-Huckins
• Suzanne Phillips
• Venus Rebholz
• Jacob Taber
• Brian Kimball
• Kristina Gotfredsen
• Timothy Parker
• Steven Boyles
• Chris Skupien
• Chelsea B
• Avishai Barnoy
• Hunter Reardon

Check out our website at chemforyourlife.com

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#079 Rebroadcast

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!

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References from this episode

1. https://cen.acs.org/articles/95/i47/s-glass-modern-day-researchers.html
2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7245478/
3. https://math.ucr.edu/home/baez/physics/General/Glass/glass.html
4. https://phys.org/news/2016-03-scientists-temperature-glass-liquid.html
5. https://ceramics.onlinelibrary.wiley.com/doi/abs/10.1111/jace.15092
6. https://cen.acs.org/articles/93/i20/Pyrex-100.html
7. Chemistry by Julia Burdge

Thanks to our monthly supporters

• Amanda Raymond
• Emily Morrison
• Kyle McCray
• Justine
• Emily Hardy
• Ash
• Vince W
• Julie S.
• Heather Ragusa
• Autoclave
• Dorien VD
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• Jessie Reder
• J0HNTR0Y
• Jeannette Napoleon
• Cullyn R
• Erica Bee
• Elizabeth P
• Rachel Reina
• Letila
• Katrina Barnum-Huckins
• Suzanne Phillips
• Venus Rebholz
• Jacob Taber
• Brian Kimball
• Kristina Gotfredsen
• Timothy Parker
• Steven Boyles
• Chris Skupien
• Chelsea B
• Avishai Barnoy
• Hunter Reardon

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#231

Why is ice so slippery? Is it because of a layer of water on top, or is it something more complex? Join us as we 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!

00:00 Experiencing Alaska in Texas
00:24 The Chemistry of Ice and Snow
01:42 Why is Ice Slippery?
03:10 Listener Questions and Ice Skating Chemistry
04:02 Debunking Ice Slipperiness Theories
11:42 Water's Unique Properties
17:43 Pressure and Melting Ice
22:30 Scientific Findings on Ice Slipperiness
24:12 Addressing Common Comments
24:31 The Science of Ice Skating
25:30 New Research on Ice
26:37 Amorphous Solids and Ice
37:09 Practical Implications of Ice Behavior
41:12 Snow Day Memories
49:14 Supporting the Show

Support this podcast on Patreon
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References from the Episode:

Thanks to our monthly supporters

• Amanda Raymond
• Emily Morrison
• Kyle McCray
• Justine
• Emily Hardy
• Ash
• Vince W
• Julie S.
• Heather Ragusa
• Autoclave
• Dorien VD
• Scott Beyer
• Jessie Reder
• J0HNTR0Y
• Jeannette Napoleon
• Cullyn R
• Erica Bee
• Elizabeth P
• Rachel Reina
• Letila
• Katrina Barnum-Huckins
• Suzanne Phillips
• Venus Rebholz
• Jacob Taber
• Brian Kimball
• Kristina Gotfredsen
• Timothy Parker
• Steven Boyles
• Chris Skupien
• Chelsea B
• Avishai Barnoy
• Hunter Reardon

Check out our website at chemforyourlife.com

Watch our episodes on YouTube

Find us on Instagram, Twitter, and Facebook @ChemForYourLife

Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.