Episodes

  • Episode 04-07 - When the System Misfires: Allergies, Autoimmune Reactions, & Staying Healthy
    Feb 2 2026

    In this episode, we examine what happens when the immune system overreacts or gets confused, and explore four essential lifestyle habits—sleep, nutrition, exercise, and stress management—to help your internal defenders stay sharp and balanced.

    This episode is part of a series all about your amazing immune system, and the way it is designed to both prevent you from getting sick in the first place, and to fight off invading germs if they do break through the defenses. We'll also learn about different kinds of pathogens, how vaccines work, and things like allergies and autoimmune conditions. The big take-away: your immune system is awesome!

    Each season of this podcast has a different thematic focus, so if you found this episode interesting or helpful, check out the rest of the episodes in this season! Instructional resources for this episode, including the script, a thinksheet, and alignment with the Next Generation Science Standards can be accessed for free at https://goodtobesmart.com

    Remember, “smart” is something we *become* as we learn new things. So, keep listening, keep learning, and keep getting smarter every day!

    It’s Good to Be Smart! is created by Dr. Dave Mulder with support from the National Science Foundation through a grant from the Robert Noyce Teacher Scholarship Program. This material is based upon work supported by the National Science Foundation under Grant No. (DUE-2243334). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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    8 mins
  • Episode 04-06 - Vaccines: Training Your Immune Heroes Without the Battle
    Feb 2 2026

    In this episode, Dr. Dave uses sports analogies to explain how vaccines act as "practice scrimmages" for the immune system, allowing your white blood cells to safely build protective memory so they are prepared to win the "real game" against dangerous diseases.

    This episode is part of a series all about your amazing immune system, and the way it is designed to both prevent you from getting sick in the first place, and to fight off invading germs if they do break through the defenses. We'll also learn about different kinds of pathogens, how vaccines work, and things like allergies and autoimmune conditions. The big take-away: your immune system is awesome!

    Each season of this podcast has a different thematic focus, so if you found this episode interesting or helpful, check out the rest of the episodes in this season! Instructional resources for this episode, including the script, a thinksheet, and alignment with the Next Generation Science Standards can be accessed for free at https://goodtobesmart.com

    Remember, “smart” is something we *become* as we learn new things. So, keep listening, keep learning, and keep getting smarter every day!

    It’s Good to Be Smart! is created by Dr. Dave Mulder with support from the National Science Foundation through a grant from the Robert Noyce Teacher Scholarship Program. This material is based upon work supported by the National Science Foundation under Grant No. (DUE-2243334). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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    7 mins
  • Episode 04-05 - Memory Mode: Antibodies, Immune Memory, & Why You Don't Get Some Sicknesses Twice
    Feb 2 2026

    In this episode, the focus shifts to the body's elite archives to explain how B-cells create custom-made "wanted posters" called antibodies and how memory cells store battle plans to ensure the body can shut down repeat invaders before you even feel sick.

    This episode is part of a series all about your amazing immune system, and the way it is designed to both prevent you from getting sick in the first place, and to fight off invading germs if they do break through the defenses. We'll also learn about different kinds of pathogens, how vaccines work, and things like allergies and autoimmune conditions. The big take-away: your immune system is awesome!

    Each season of this podcast has a different thematic focus, so if you found this episode interesting or helpful, check out the rest of the episodes in this season! Instructional resources for this episode, including the script, a thinksheet, and alignment with the Next Generation Science Standards can be accessed for free at https://goodtobesmart.com

    Remember, “smart” is something we *become* as we learn new things. So, keep listening, keep learning, and keep getting smarter every day!

    It’s Good to Be Smart! is created by Dr. Dave Mulder with support from the National Science Foundation through a grant from the Robert Noyce Teacher Scholarship Program. This material is based upon work supported by the National Science Foundation under Grant No. (DUE-2243334). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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    7 mins
  • Episode 04-04 - Your Inside Army: White Blood Cells to the Rescue!
    Feb 2 2026

    In this episode, the "Immunity League" assembles as we meet specific white blood cell heroes like the "big eating" Macrophages and the T-cell "Commanders," revealing how they use elite teamwork and communication to find and destroy invaders.

    This episode is part of a series all about your amazing immune system, and the way it is designed to both prevent you from getting sick in the first place, and to fight off invading germs if they do break through the defenses. We'll also learn about different kinds of pathogens, how vaccines work, and things like allergies and autoimmune conditions. The big take-away: your immune system is awesome!

    Each season of this podcast has a different thematic focus, so if you found this episode interesting or helpful, check out the rest of the episodes in this season! Instructional resources for this episode, including the script, a thinksheet, and alignment with the Next Generation Science Standards can be accessed for free at https://goodtobesmart.com

    Remember, “smart” is something we *become* as we learn new things. So, keep listening, keep learning, and keep getting smarter every day!

    It’s Good to Be Smart! is created by Dr. Dave Mulder with support from the National Science Foundation through a grant from the Robert Noyce Teacher Scholarship Program. This material is based upon work supported by the National Science Foundation under Grant No. (DUE-2243334). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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    7 mins
  • Episode 04-03 - You've Been Invaded! Germs, Pathogens, & How They Attack
    Feb 2 2026

    In this episode, the "villains" of the microscopic world are unmasked as Dr. Dave defines the four major types of pathogens—bacteria, viruses, fungi, and parasites—and illustrates the different strategies these invaders use to hijack the body’s resources.

    This episode is part of a series all about your amazing immune system, and the way it is designed to both prevent you from getting sick in the first place, and to fight off invading germs if they do break through the defenses. We'll also learn about different kinds of pathogens, how vaccines work, and things like allergies and autoimmune conditions. The big take-away: your immune system is awesome!

    Each season of this podcast has a different thematic focus, so if you found this episode interesting or helpful, check out the rest of the episodes in this season! Instructional resources for this episode, including the script, a thinksheet, and alignment with the Next Generation Science Standards can be accessed for free at https://goodtobesmart.com

    Remember, “smart” is something we *become* as we learn new things. So, keep listening, keep learning, and keep getting smarter every day!

    It’s Good to Be Smart! is created by Dr. Dave Mulder with support from the National Science Foundation through a grant from the Robert Noyce Teacher Scholarship Program. This material is based upon work supported by the National Science Foundation under Grant No. (DUE-2243334). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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    8 mins
  • Episode 04-02 - Fortress Mode: Your Skin & First Line Defenses
    Feb 2 2026

    In this episode, we explore "Fortress Mode" to discover how the body’s physical and chemical barriers—including skin, mucus, stomach acid, and even earwax—act as a protective castle wall that stops germs before they can ever get inside.

    This episode is part of a series all about your amazing immune system, and the way it is designed to both prevent you from getting sick in the first place, and to fight off invading germs if they do break through the defenses. We'll also learn about different kinds of pathogens, how vaccines work, and things like allergies and autoimmune conditions. The big take-away: your immune system is awesome!

    Each season of this podcast has a different thematic focus, so if you found this episode interesting or helpful, check out the rest of the episodes in this season! Instructional resources for this episode, including the script, a thinksheet, and alignment with the Next Generation Science Standards can be accessed for free at https://goodtobesmart.com

    Remember, “smart” is something we *become* as we learn new things. So, keep listening, keep learning, and keep getting smarter every day!

    It’s Good to Be Smart! is created by Dr. Dave Mulder with support from the National Science Foundation through a grant from the Robert Noyce Teacher Scholarship Program. This material is based upon work supported by the National Science Foundation under Grant No. (DUE-2243334). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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    7 mins
  • Episode 04-01 - Meet Your Body's Defense Squad: What Is Immunity?
    Feb 2 2026

    In this episode, Dr. Dave introduces the immune system as a coordinated superhero team living inside you, explaining the fundamental differences between the rapid-response "innate" system you are born with and the highly specialized "adaptive" system that learns to recognize and remember specific threats.

    This episode is part of a series all about your amazing immune system, and the way it is designed to both prevent you from getting sick in the first place, and to fight off invading germs if they do break through the defenses. We'll also learn about different kinds of pathogens, how vaccines work, and things like allergies and autoimmune conditions. The big take-away: your immune system is awesome!

    Each season of this podcast has a different thematic focus, so if you found this episode interesting or helpful, check out the rest of the episodes in this season! Instructional resources for this episode, including the script, a thinksheet, and alignment with the Next Generation Science Standards can be accessed for free at https://goodtobesmart.com

    Remember, “smart” is something we *become* as we learn new things. So, keep listening, keep learning, and keep getting smarter every day!

    It’s Good to Be Smart! is created by Dr. Dave Mulder with support from the National Science Foundation through a grant from the Robert Noyce Teacher Scholarship Program. This material is based upon work supported by the National Science Foundation under Grant No. (DUE-2243334). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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    8 mins
  • Episode 03-15 - Gregor Mendel: The Gardener Geneticist
    Sep 30 2025

    This episode is all about Gregor Mendel, a less-than-famous (but very important scientist!) who helped deepen our understanding of the rules that govern how traits are passed on from parents to offspring..

    This episode is part of a series about “less-than-famous scientists”—names you may have never heard before, but people you should know about! Each of these stories will help you understand more about the nature of science, and help you see how even small contributions can be important things that help us better understand our world.

    Each season of this podcast has a different thematic focus, so if you found this episode interesting or helpful, check out the rest of the episodes in this season! Instructional resources for this episode, including the script, a thinksheet, and alignment with the Next Generation Science Standards can be accessed for free at https://goodtobesmart.com

    Remember, “smart” is something we *become* as we learn new things. So, keep listening, keep learning, and keep getting smarter every day!

    It’s Good to Be Smart! is created by Dr. Dave Mulder with support from the National Science Foundation through a grant from the Robert Noyce Teacher Scholarship Program. This material is based upon work supported by the National Science Foundation under Grant No. (DUE-2243334). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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    6 mins