Melissa and Jam dive into a variety of listener-submitted questions. They discuss the science behind fluffy shave ice versus mainland shaved ice, the effectiveness and safety of ozone treatments for smoke smells, and the potential impact of glyphosate on human health. They also explore the chemistry of everyday items like rinse aid in dishwashers, different types of soap, and even hypothetical scenarios involving bleach and gasoline. Melissa provides insights based on her knowledge as a chemist, offering a fascinating look into the chemistry of our everyday life.

00:00 Introduction and Listener Questions
00:29 Chemistry of Shave Ice
06:58 Ozone Treatment for Cigarette Smell
12:15 Glyphosate and Its Effects
21:32 Rinse Aid in Dishwashers
24:02 Concerns About Rinse Safety
24:24 Exploring Cleaning Products
26:26 Differences in Soaps and Shampoos
27:27 Chemistry of Hair and Skin Products
32:59 Hypothetical: Bleach vs. Gasoline
37:17 Listener Shoutouts and Anniversary
42:27 Chemistry of Erasable and Invisible Inks
45:22 Supporting the Podcast

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Melissa and Jam explore the science behind why sweat is salty. They discuss personal experiences with sweating, the types of sweat glands, and the chemical processes involved in sweat production. The episode explains how osmosis, ion channels, and salt concentrations contribute to the movement of sweat through sweat glands to the skin's surface. They also touch on evolutionary aspects and the role of sweat in cooling the body. For anyone curious about the chemistry of everyday life, this episode offers an accessible and intriguing explanation.

00:00 Introduction: Why is Sweat Salty?
00:27 Personal Experiences with Sweat
01:32 The Science Behind Sweat
02:00 Meet the Hosts
02:20 Types of Sweat Glands
04:30 How Sweat Reaches the Skin
07:31 The Role of Salt in Sweat
14:20 Health Indicators in Sweat
17:01 Understanding Osmosis and Interstitial Fluid
17:39 Evolutionary Perspective on Sweating
20:01 Mechanism of Sweat Glands
22:41 Sweat Composition and Function
27:39 Personal Sweating Experiences
33:47 Supporting the Show and Community

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References from this episode:

1. https://pmc.ncbi.nlm.nih.gov/articles/PMC6773238/
2. https://pubs.rsc.org/en/content/articlehtml/2024/lc/d3lc00874f#cit23
3. https://pubs.acs.org/doi/full/10.1021/acsnano.4c10344

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• Scott B
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• Ciara L
• J0HNTR0Y
• Jeannette N
• Cullyn R
• Erica B
• Elizabeth P
• Sarah M
• Rachel R
• Letila
• Katrina B
• Suzanne P
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• Timothy P
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#050

This week, Melissa and Jam once again look under the armpits of society, this time to explore sweat. Is it cool? Well does it keep us cool? How? At what cost? Is there more to sweat than meets the eye? Can you drink it? Grab your sweat bands and let's hit the track Paulie Bleeker.

References from this episode

1. Flexible and Superwettable Bands as a Platform toward Sweat Sampling and Sensing - Analytical Chemistry - Xuecheng He, Tailin Xu, Zhen Gu, Wei Gao, Li-Ping Xu, Tingrui Pan, and Xueji Zhang
2. A Fully Integrated and Self-Powered Smartwatch for Continuous Sweat Glucose Monitoring - ACS Sensors - Jiangqi Zhao, Yuanjing Lin, Jingbo Wu, Hnin Yin Yin Nyein, Mallika Bariya, Li-Chia Tai, Minghan Chao, Wenbo Ji, George Zhang, Zhiyong Fan, and Ali Javey
3. General Chemistry, Edition 2 - Flowers, Theopold, Langley, Robinson

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