FLASHCARDS! Tryptophan, Mood, and Thanksgiving Science
Release Date: 11/21/2025
FLASHCARDS! Research that Sits in the Margins
Math! Science! History!
A clean success story is rarely the whole story. In this Flashcard Friday episode of Math! Science! History!, Gabrielle Birchak offers a simple method for spotting the people who made breakthroughs possible but did not become the headline. In the Margins episode gives you three practical questions you can use on any science story to find hidden contributors in author lists, acknowledgments, lab records, and patent filings. Save this episode and use it as your listening companion heading into Women’s History Month. What you’ll learn (because the footnotes have feelings) ...
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Hidden Inventors: Black Women, Patents, and Lost Credit
Math! Science! History!
In this episode of Math! Science! History!, Gabrielle Birchak traces the paper trails behind Black women inventors whose ideas reshaped ordinary life, from laundry tools and home design to security systems and medical devices. You will hear how patents, assignments, licensing, and missing records shaped who got credit and who got paid, and why some inventions became household standards while their inventors stayed unfamiliar. This story is about engineering, documentation, and what happens when innovation meets the economics of recognition. What You’ll Learn in This Episode Follow the Paper...
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FLASHCARDS! The Power of Self-Learning
Math! Science! History!
Self-teaching is not only a way to collect knowledge. It is a life skill that builds self-reliance, career mobility, and mental flexibility over time. In this Flashcard Friday episode, Gabrielle explains why lifelong learning supports brain health and communication, how certificates can make your progress visible on LinkedIn, and why stepping outside your comfort zone sometimes means learning hard history, including the ways slavery shaped American systems. Call to action: Follow the show so you do not miss future Flashcard Fridays, share this episode with a friend who loves learning, and...
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Benjamin Banneker: The African-American Astronomer who shaped D.C.
Math! Science! History!
Benjamin Banneker used math, astronomy, and publication to claim space in a country that tried to deny him authority. This episode follows his path from a Maryland farm to almanacs that carried his name across the young republic, and to the 1791 boundary survey work that helped set the lines of the new federal district. What You’ll Learn 1. How Banneker became an astronomer without a formal scientific education and why an ephemeris inside an almanac mattered so much in the late 1700s. 2. What Banneker actually did in 1791 during...
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FLASHCARDS! Think Clearly Under Pressure
Math! Science! History!
Ever lose a great idea right when you need it, then wish your brain had a “save” button? This episode gives you one. In this Flashcards Friday toolkit, I share three quick prompts you can use to think more clearly, learn faster, and troubleshoot problems without spiraling. You will leave with a simple loop you can apply to school, work, and real-life conversations. What You’ll Learn The System Card: How to name the system, the key variables, and the constraints, so your thinking has structure. The Cold Recall Card: How to practice producing your message without notes, especially for...
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Victorian Thought Photography
Math! Science! History!
A camera was not always needed to “capture” a thought. In the late Victorian era, a few experimenters pressed photographic plates to foreheads and claimed the developed marks were images of the mind. In this episode of Math! Science! History!, we trace the strange rise of “thought photography,” why it sounded plausible in an age of new invisible forces, and what these experiments reveal about technology, interpretation, and scientific method. What Develops in the Dark What you’ll learn in this episode: 1. Who tried to photograph thoughts - How Hippolyte...
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FLASHCARDS! Talking to Science Skeptics
Math! Science! History!
What do you say when someone doesn’t trust science? In this Flashcards Friday episode, I share practical, evidence-based ways to talk about science with skeptics, without attacking, shaming, or arguing past each other. This episode focuses on how evidence actually works, why people reject scientific claims, and how scientists and science communicators can lower defensiveness by explaining methods, uncertainty, and values clearly. If you care about public trust in science, this episode offers tools you can use immediately. Resources & Further Reading Pew Research Center — Alan Alda...
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Hobbes vs. Boyle: Who Decides Scientific Facts?
Math! Science! History!
Episode Overview In the 1660s, two towering thinkers, Thomas Hobbes and Robert Boyle, clashed over a strange new machine: the air pump. What looked like a technical disagreement about air and vacuum quickly became something much larger. This episode examines how Boyle’s experimental approach and Hobbes’s philosophical skepticism shaped the foundations of modern science, and why their dispute still echoes today in debates over expertise, public trust, and the role of scientists in public policy. From the invention of “virtual witnessing” to modern struggles with...
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FLASHCARDS! The Patience of the Sun Dagger
Math! Science! History!
The Sun Dagger on Fajada Butte in Chaco Canyon is a powerful reminder that understanding is built slowly. Long before textbooks and lab reports, careful observers tracked repeating patterns in light and season, and a community carried that knowledge forward. In today’s Flashcards episode, we use the Sun Dagger as a practical thinking tool for modern life: watch first, listen second, explain last. It is a simple sequence that improves scientific judgment, reduces snap conclusions, and makes our relationships more accurate and humane. Three Flashcards from a Stone Calendar Watch first:...
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The Sun Dagger: How Ancient Puebloans Made Calendars from Sunlight
Math! Science! History!
More than a thousand years ago, the Ancestral Puebloans built a working solar calendar without clocks, written mathematics, or mechanical instruments. Etched into stone at Fajada Butte in Chaco Canyon, the Sun Dagger used light and shadow to track solstices and equinoxes with remarkable precision. In this episode, we explore how the Sun Dagger worked, why its spiral design mattered, and what it reveals about community, long-term observation, and scientific thinking before modern technology. This is a story about astronomy, patience, and the shared human effort to understand time by watching...
info_outlineIf you enjoy learning how chemistry, math, and history shape everyday life, follow Math! Science! History! and share this episode with someone still blaming the turkey!
Why does tryptophan always get accused of making everyone sleepy after Thanksgiving? Today’s Flashcards Friday takes a closer look at the real science behind this famous amino acid , including how it works in the body, why carbohydrates change everything, and how tryptophan connects to your mood and even your sense of gratitude. Whether your plate had turkey or tofu, this tiny molecule has a much bigger story to tell.
Three Things You’ll Learn in This Episode: The Tryptophan Edition
- How tryptophan actually enters the brain and why the carb-insulin ratio determines whether it succeeds.
- Why vegetarian foods often contain more tryptophan than turkey, and how plant-based meals create the same post-meal calm.
- How serotonin and tryptophan connect to emotional resilience and gratitude, especially after warm, shared meals.
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Selections from The Little Prince by Lloyd Rodgers
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