Joyful Microbe – Détails, épisodes et analyse

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Joyful Microbe

Justine Dees, PhD

Sciences

Fréquence : 1 épisode/42j. Total Éps: 42

All about the microbes we encounter in our daily lives (with or without realizing it). The Joyful Microbe podcast helps you see how bacteria, fungi, viruses, archaea, and protozoa live everywhere around us and constantly impact our lives. Host Justine Dees, PhD talks to microbiology experts of all kinds to share the amazing variety of these fascinating microorganisms. Usually, we think of infections, but microbiology is SO MUCH MORE THAN THAT.

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Données mises à jour le 04/07/2026

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Sharing the Story of Agar and Fanny Angelina Hesse: Dr. Corrado Nai

Épisode 41

samedi 25 octobre 2025 • Durée 01:02:42

Agar is a crucial tool used daily in most microbiologists’ work. It’s the stuff that goes in Petri dishes for microbes to grow on. But many microbiologists are unaware of how this substance became so important in the field. A woman named Fanny Angelina Hesse played a significant role in this story, yet she remains largely unknown in microbiology. Dr. Corrado Nai is making it his mission to change this. In this episode, we chat about how he’s writing a graphic novel on the untold story of how Fanny Angelina Hesse introduced agar to the lab, and why it matters.

Topics covered in this episode:

How Corrado got interested in microbiology, became a science writer, and is now creating a graphic novel about Fanny Angelina Hesse
What agar is how microbiologists use it
The story of Fanny Angelina Hesse and how agar became so important in microbiology
How little-known Fanny Angelina Hesse is
New historical material Corrado uncovered
The upcoming graphic novel about Fanny Angelina Hesse
At-home microbiology activity: Discovering the Microbial World: Create Your Own Agar Plates

JOYFUL MICROBE SHOW NOTES: https://joyfulmicrobe.com/fanny-hesse-corrado-nai/

AT-HOME MICROBIOLOGY ACTIVITY: https://joyfulmicrobe.com/create-agar-plates/

JOYFUL MICROBE TWITTER: https://twitter.com/joyfulmicrobe/

JOYFUL MICROBE INSTAGRAM: https://www.instagram.com/justineldees/

SUPPORT JOYFUL MICROBE: https://ko-fi.com/joyfulmicrobe/

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Are Oysters Safe to Eat Raw? Understanding the Microbes and Risks: Dr. Rachel Diner

Épisode 40

lundi 21 juillet 2025 • Durée 50:15

Oysters can be risky to eat raw, but what microbes are actually responsible? Is there more to it than just chance? In this episode, I talk with Dr. Rachel Diner, Assistant Professor at the University of Memphis researching aquatic microbes, to find out.

Here, we discuss the hidden world of bacteria in oysters, exploring the roles these organisms play in the environment and their impact on human health. Our conversation digs into the complexities of Vibrio bacteria and the environmental conditions that influence their prevalence, but it’s also full of practical advice.

Listen to the episode to learn how there’s a lot more to the story when it comes to oysters and the bacteria they harbor.

Topics covered in this episode:

How Rachel got interested in microbiology and became an Assistant Professor researching aquatic microbes at the University of Memphis
How we get sick from oysters and what microbes are involved
Can you tell if oysters will make you sick from smelling them?
How does Vibrio get into oysters?
How much Vibrio will make us sick?
The roles of Vibrios in the environment
How environmental factors (water temperature, salinity, and nutrient levels) influence the prevalence and virulence of microbes in oyster populations
Are there certain times of year when it’s safer to eat oysters? (Only months that end in R)
Rachel’s advice as a microbiologist when it comes to oysters
Microbiology misconceptions
Shifts in the field of non-model systems’ microbiomes
At-home microbiology activity: Winogradsky columns (learn some helpful tips on running these columns)

JOYFUL MICROBE SHOW NOTES: https://joyfulmicrobe.com/oyster-microbiology-rachel-diner/

AT-HOME MICROBIOLOGY ACTIVITY: https://joyfulmicrobe.com/winogradsky-column/

JOYFUL MICROBE TWITTER:

The Impact of Alcohol on the Gut Microbiome: Andrew Day

Épisode 39

mercredi 27 novembre 2024 • Durée 01:14:12

Can drinking alcohol impact our gut health? It sure can. Since our gut health is so crucial for our overall health, this episode focuses on the connection between alcohol consumption and the microbial component of our gut health, the gut microbiome. In this episode, I spoke with microbiology researcher Andrew Day about how alcohol disrupts the gut microbiome and mycobiome — the fungal community in the gut — causing changes that affect the body and brain.

We explore whether quitting alcohol can heal the gut and the potential of future therapies like probiotics or fecal transplants to aid recovery. Join us to learn about the gut microbiome’s surprising role in addiction and what science is uncovering about this complex relationship. By understanding these connections, we gain insight into the broader impacts of alcohol on health and behavior.

Topics covered in this episode:

The role of fungi in the microbiome
Impact of alcohol on the gut microbiome (and mycobiome)
Recovery and microbiome restoration
The gut microbiome and addiction
The gut-brain axis and alcohol consumption
Potential of microbial therapies for recovery: probiotics, prebiotics, fecal transplants
At-home microbiology activity: Grow a biofilm

JOYFUL MICROBE SHOW NOTES: https://joyfulmicrobe.com/alcohol-gut-microbiome-andrew-day/

JOYFUL MICROBE TWITTER: https://twitter.com/joyfulmicrobe/

JOYFUL MICROBE INSTAGRAM: https://www.instagram.com/justineldees/

SUPPORT JOYFUL MICROBE: https://ko-fi.com/joyfulmicrobe/

Science-Backed Approaches to Gut Health: Kristina Campbell

Épisode 38

jeudi 31 octobre 2024 • Durée 01:15:03

Gut health has become a major topic in wellness, influencing everything from grocery choices to discussions on social media. Research increasingly shows the gut microbiome’s role in digestion, immunity, and even mood. But with so much information available, it’s hard to separate science from trend. In this episode, I talk with Kristina Campbell, a science writer known for her expertise in the microbiome. As the author of Gut Health for Dummies, Kristina shares practical, research-based insights to help readers understand what gut health really involves — and how to make confident, informed choices.

Topics covered in this episode:

How Kristina got interested in microbiology and her path to becoming a science writer and gut health ambassador
What is gut health and how does it relate to the gut microbiome?
What does the gut microbiome do for us?
What motivated Kristina to write Gut Health for Dummies
How lifestyle factors can impact gut health
How diet impacts gut health
Overview of “Biotics” - probiotics, prebiotics, synbiotics, and postbiotics
A common myth about probiotics
Why microbes can’t necessarily be labeled strictly as good and bad
Gut health trends
How to assess scientific information
At-home microbiology activity: Kid-Friendly Gut Health Activity: Make Your Own Emulsifier-Free Dressing

JOYFUL MICROBE SHOW NOTES: https://joyfulmicrobe.com/gut-health-kristina-campbell/

AT-HOME MICROBIOLOGY ACTIVITY: https://joyfulmicrobe.com/gut-health-emulsifiers-activity/

JOYFUL MICROBE TWITTER: https://twitter.com/joyfulmicrobe/

JOYFUL MICROBE INSTAGRAM: https://www.instagram.com/justineldees/

How Microbes Are Useful in Agriculture: Dr. Barry Goldman

Épisode 37

lundi 30 septembre 2024 • Durée 53:40

Have you ever stopped to think about the teeming world hidden beneath your feet? It's not just dirt down there; it's a vibrant ecosystem teeming with microbes!

These unseen organisms play a critical role in our daily lives, impacting everything from the food we eat to the air we breathe. In this episode, we'll delve into the fascinating world of soil microbes and explore how they're revolutionizing agriculture.

As the agricultural sector faces growing challenges from rising input costs, herbicide and pesticide resistance, soil degradation, and climate change, the need for more sustainable and efficient farming methods is critical.

Microbial agricultural biologicals offer an exciting solution. These bio-based products — biofertilizers, biopesticides, and biostimulants — harness the power of microbes to support farming and create a more sustainable future for agriculture.

In this episode, Dr. Barry Goldman, founder and Chief Science Officer of Pluton Biosciences, shares insights into the remarkable potential of these invisible allies in agriculture.

Join us as we discuss how innovative companies like Pluton Biosciences are developing cutting-edge solutions to tackle the challenges faced in modern agriculture.

In this episode, you will learn about…

Dr. Goldman's journey into microbiology
The importance of soil microbiology in agriculture
Agricultural biologicals, including biopesticides, biofertilizers, and biostimulants, and companies developing these products
Pluton Biosciences and its microbial discovery platform
Challenges and misconceptions in the use of microbes in agriculture
At-home microbiology activity: Exploring Photosynthetic Microbes in Our Soil

Get ready to be inspired by the power of microbes and their transformative potential for the future of our food and our planet.

JOYFUL MICROBE SHOW NOTES: https://joyfulmicrobe.com/microbes-in-agriculture-barry-goldman/

Coloring the Microbial World: Drs. Sarah Wettstadt and Noémie Matthey

Épisode 36

mardi 27 août 2024 • Durée 44:57

Coloring books aren't just for kids anymore. In fact, one unique coloring book is bringing the fascinating world of bacteria to life for all ages. In this Joyful Microbe podcast episode, we’re exploring "Coloured Bacteria from A to Z" with the scientists behind this delightful educational resource.

Whether you're a parent looking to spark your child's interest in science, a teacher searching for engaging hands-on learning materials, or an adult who enjoys the calming act of coloring, this microbiology coloring book offers something for everyone. By combining scientific accuracy with artistic creativity, the authors have created a one-of-a-kind tool for exploring the microbial realm.

Too often, bacteria are portrayed in a negative light, associated only with illness and disease. This limited perspective can make it difficult to appreciate the incredible diversity and beneficial roles bacteria play in our world.

But the authors of "Coloured Bacteria from A to Z," Drs. Sarah Wettstadt and Noémie Matthey are on a mission to change that. Through their coloring book, they aim to foster curiosity, dispel common misconceptions, and showcase the "superpowers" of these microscopic marvels through a balanced perspective.

Topics covered in this episode:

How two scientists with microbiology backgrounds came together to create the "Coloured Bacteria from A to Z" coloring book
The unique format of the book, featuring one bacterium for each letter of the alphabet
The authors' strategies for balancing scientific accuracy with artistic representation in the illustrations
Challenges the authors faced in selecting which bacteria to feature and how to convey key concepts in a simple, engaging way
Ways teachers, parents, and curious learners of all ages can use the coloring book to explore the microbial world
Insights into common misconceptions about bacteria that the authors hope to address through this educational resource

Let’s dive into the colorful, joyful world of bacteria! After listening to this episode, you’ll be ready to show off your microbiology artistic skills.

Making Microscopy Accessible with Foldscope: Holly Stuart

Épisode 35

mercredi 31 juillet 2024 • Durée 01:09:45

Understanding microbes is an essential part of appreciating the natural world and our environment. But exploring microbiology using a traditional microscope comes with the potential barriers of cost and complexity, sometimes preventing hands-on learning experiences in schools and communities. Imagine having the power to explore the microscopic world with an affordable, simple, and durable microscope. The Foldscope makes this exploration accessible to everyone, from students to lifelong learners. It empowers educators and students alike to engage actively in microscopy, breaking down barriers in science education.

In this episode, we delve into the Foldscope microscope with Holly Stuart, Education Specialist for Foldscope Instruments. Discover how Foldscope works, its real-world applications in research and education, and practical tips for integrating Foldscope into classroom activities.

By the end of this episode, you will see how Foldscope is transforming science education and exploration of the microbial world, bridging the gap between accessibility and scientific discovery.

Topics covered in this episode:

Holly's scientific and education background and journey to microbiology education
How the Foldscope makes microscopy accessible and affordable
How the Foldscope works
Levels of magnification and views of microorganisms like bacteria and tardigrades
Development of the Foldscope and its iterations
Applications of Foldscopes in scientific research and beyond
Tips for educators to incorporate Foldscopes into their teaching
At-home microbiology activity: Exploring Microbes in Your Fish Tank with the Foldscope Microscope

JOYFUL MICROBE SHOW NOTES: https://joyfulmicrobe.com/foldscope-holly-stuart/

AT-HOME MICROBIOLOGY ACTIVITY: https://joyfulmicrobe.com/foldscope-fish-tank-activity/

JOYFUL MICROBE TWITTER:

Degrading Plastic Through the Power of Microbes: Angie Beckett

Épisode 34

mardi 2 juillet 2024 • Durée 51:16

Plastic waste in our oceans is a significant problem, but some bacteria might offer a solution. Did you know that certain bacteria can break down plastic?

Plastic pollution affects wildlife and can even enter our food and water. As plastic production increases, finding better ways to manage this material is essential.

Current recycling methods are not very efficient. Most plastic ends up in landfills or the environment after just one use, and it can take centuries to degrade.

Researchers are investigating plastic-degrading microbes and enzymes that could improve recycling. These microbes can break plastic into its original building blocks, allowing for more effective recycling.

Join me as I talk with Angie Beckett, a researcher at the University of Portsmouth, about the potential of plastic-degrading microbes to enhance recycling and reduce plastic pollution.

In this episode, we will explore:

The discovery of plastic-eating bacteria
How microbes break plastic down and their potential for large-scale use
Challenges in finding and engineering efficient plastic degraders
Using portable DNA sequencing to discover new microbial solutions
The importance of collaboration in applying microbiology to real-world problems
At-home microbiology activity: Find Plastic-Degrading Bacteria via Sequencing Simulation

JOYFUL MICROBE SHOW NOTES: https://joyfulmicrobe.com/plastic-degradation-angie-beckett/

AT-HOME MICROBIOLOGY ACTIVITY: https://joyfulmicrobe.com/plastic-degrading-bacteria-activity/

JOYFUL MICROBE TWITTER: https://twitter.com/joyfulmicrobe/

JOYFUL MICROBE INSTAGRAM:

Lichen Basics: Dr. Jessica Allen

Épisode 33

mercredi 29 mai 2024 • Durée 01:13:25

Have you ever noticed the colorful growths on trees and rocks but weren't sure what they were? Lichens are all around us yet often overlooked. They play important roles in ecosystems and can even indicate air quality. Many people don't fully understand these symbiotic organisms or appreciate their significance.

In this episode, you'll learn about the fascinating world of lichens from lichenologist Dr. Jessica Allen. We discuss what lichens are, their importance in nature, how they live, and how we can appreciate these miniature ecosystems all around us. You'll come away seeing lichens in a whole new light!

Topics covered in this episode:

What are lichens?
Lichens as miniature ecosystems harboring diverse microorganisms
Important roles of lichens
How lichens live on a wide range of surfaces and obtain nutrients
Using lichens to monitor air quality
The varied lifespans of lichens
Uses of lichens from dyes to medicine
Lichen myths
At-home microbiology activities: 3 hands-on activities to explore and appreciate lichen diversity

JOYFUL MICROBE SHOW NOTES: https://joyfulmicrobe.com/lichen-basics-jessica-allen/

AT-HOME MICROBIOLOGY ACTIVITIES: https://joyfulmicrobe.com/3-lichen-activities/

JOYFUL MICROBE TWITTER: https://twitter.com/joyfulmicrobe/

JOYFUL MICROBE INSTAGRAM: https://www.instagram.com/justineldees/

SUPPORT JOYFUL MICROBE: https://ko-fi.com/joyfulmicrobe/

Plant Pathogen Lettuce Downy Mildew: Dr. Kelsey Wood

Épisode 32

jeudi 25 avril 2024 • Durée 49:59

Have you ever noticed little white fluffy spots or yellowish patches on your lettuce at the grocery store? This could be downy mildew, a microbe that infects lettuce and other leafy greens.

This microbe might not be well-known, but it's of great importance due to its effects on the agriculture industry and the food we buy. It poses a significant challenge for farmers by potentially wiping out entire crops. If we unknowingly purchase lettuce or herbs infected with downy mildew from the organic section, we might end up with unappealing produce.

Understanding downy mildew can help us make informed choices at the store and gain insight into the challenges faced by farmers in controlling this pathogen.

So, in this episode we'll learn about downy mildew from plant pathology researcher Dr. Kelsey Wood. She'll explain what this organism is, how to identify it, and the latest research aiming to control it in a more sustainable way. We'll also cover its life cycle, genetics, and impacts on agriculture. Tune in to discover this intriguing plant pathogen.

Topics covered in this episode:

What downy mildew is and its life cycle
Why downy mildew is not a fungus
How downy mildew spreads
Downy mildew’s impact on agriculture
Spotting downy mildew in your local grocery store
Discovering a highly resistant lettuce variety
At-home microbiology activities: grocery store hunt and vinegar wash experiment

JOYFUL MICROBE SHOW NOTES: https://joyfulmicrobe.com/downy-mildew-kelsey-wood/

AT-HOME MICROBIOLOGY ACTIVITY: https://joyfulmicrobe.com/downy-mildew-activity/

AT-HOME MICROBIOLOGY ACTIVITY: https://joyfulmicrobe.com/mold-vinegar-wash-activity/

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