In forests, in lawns, in city parks across the world lurks a small, pale, unassuming mushroom whose inconspicuous appearance belies its deadly nature. For within this mushroom dwelsl one of the deadliest poisons known to humans: amatoxin. It’s because of this toxin that the aptly-named ‘death cap mushroom’ (Amanita phalloides) is responsible for the vast majority of mushroom-related deaths around the globe each year. What makes this poisonous mushroom so very deadly, and is the...
Feb 18, 2025•1 hr 10 min•Transcript available on Metacast Okay everyone, think about your tongue. Maybe move it around a bit, check in with it, consider what it means to you. Now imagine that your tongue suddenly shriveled up and fell off and that in its place is a tongue-sized isopod aka rollie pollie aka pillbug. Just there, hanging out, forever. How are you feeling? Horrified? Disgusted? Hey, we get it. But at least you’ll never be alone again. Believe it or not, this is not some bad creative writing exercise. This is a very real parasite. In ...
Feb 11, 2025•1 hr 3 min•Transcript available on Metacast Hemorrhagic virus? Check. Deadly disease? Check. Mosquito-borne? Check. Affected by animal movement, human activity, and environmental change? Check. Rift Valley Fever has all the markings of a classic TPWKY episode. This week, we’re doing a deep dive on this deadly virus, taking a One Health approach to explore the intricate relationships between animals, humans, and the environment to understand how this virus moves across the landscape. We trace the various paths this virus takes: through the...
Feb 04, 2025•1 hr 15 min•Transcript available on Metacast We are coming at you with our very first live episode from Perth, Australia! Here at the 2024 Australian Institute of Occupational Hygienists Annual Scientific Conference and Exhibition , occupational hazards and exposures get top billing. And one of the most ubiquitous hazards, experienced by nearly every industry is fatigue, specifically fatigue caused by circadian rhythm disruption. In this very special episode, we explore how our circadian rhythms work and some of the consequences that can e...
Jan 28, 2025•1 hr 12 min•Transcript available on Metacast Everyone’s got a favorite disease movie. What’s yours? Does it feature zombies like 28 Days Later (2002), or is it more grounded in reality, like Contagion (2011)? Does it end with a glimmer of hope or with a dose of despair? Who are the bad guys and who are the good guys? From the early days of disease movies like Panic in the Streets (1950) to more recent films like Little Joe (2019), these movies have provided endless entertainment, excitement, and opportunities to examine society...
Jan 21, 2025•46 min•Transcript available on Metacast Yes, the world may be out to get us with allergens around every corner, but we’ve got some tricks up our sleeve to help us cope. Our allergy treatment toolkit includes an impressive suite of tools, and in the second episode of our two-part series on allergies, we focus on three in particular: antihistamine medications, allergy shots, and the epinephrine auto-injector (aka the EpiPen). We take you through how exactly each of these work, trace their development from concept to product, and h...
Jan 14, 2025•2 hr 33 min•Transcript available on Metacast Sometimes it seems like the world is out to get us: bees in our garden, pollen in the air, nuts in our brownies, any number of other things that could trigger an allergic reaction ranging from itchy eyes and a runny nose all the way to anaphylaxis. Why must our bodies react in such over-the-top ways to these seemingly innocuous substances? In the first episode of our two-parter on allergies, we explore that very question. From the biological basis of an allergic reaction to the potential evoluti...
Jan 07, 2025•1 hr 24 min•Transcript available on Metacast In February 2012, Paul Volkman was sentenced to four consecutive terms of life imprisonment for his role in illegally prescribing and dispensing pain medications that resulted in the deaths of several individuals in his care. This was a remarkable case, both in terms of the lengthy sentence as well as the perpetrator. Paul Volkman was a highly-educated physician researcher, who earned both his MD and PhD and had decades of experience practicing medicine. How did he end up in a cash-only pain cli...
Dec 17, 2024•1 hr•Transcript available on Metacast For decades, it seemed like the appendix would go the way of 8-track players, pagers, and the phonograph. Outdated, obsolete, not worth keeping around. Surgeons performed appendectomies like it was spring cleaning - when in doubt, cut it out. But then the tides began to turn as medicine started to question the long-held belief that the appendix is a defunct organ (on a good day) or a ticking time bomb (on a very bad one). In this episode, we trace the story of the appendix from its earliest desc...
Dec 10, 2024•1 hr 13 min•Transcript available on Metacast Among the many conditions that creep under your skin and make scratching irresistible, scabies alone holds the honor of being called simply “The Itch” for centuries. In this episode, we examine how the burrowing scabies mites cause this extremely uncomfortable sensation, what we can do to halt their progress, and how contagious they really are (less than you probably think). Today, the word scabies instantly conjures up images of the mite responsible for The Itch, but for centuries, ...
Dec 03, 2024•1 hr 7 min•Transcript available on Metacast A mere 150 years ago, uttering the words “scarlet fever” was enough to strike fear into the hearts of many, especially parents of young children. For a brief period of time, this disease, caused by an infection with the bacterium Streptococcus pyogenes , reigned as a leading cause of childhood death in many parts of the world. It left its mark on gravestones, in public health decrees, in literature like the Velveteen Rabbit, but then something changed. The disease became milder...
Nov 26, 2024•1 hr 11 min•Transcript available on Metacast We really don’t give fungi the credit they deserve. Over the years of this podcast, we’ve covered only a handful of fungal pathogens, and pathogenic fungi themselves represent a teeny tiny proportion of the incredible diversity of fungal life on this planet. But with this book club episode, we’re attempting to correct this oversight, at least a little bit. Toxicologist and science writer Dr. Emily Monosson joins us to discuss her book Blight: Fungi and the Com...
Nov 19, 2024•54 min•Transcript available on Metacast That same little bottle of retinol serum sitting on your bathroom counter - how does it work? Does it actually work? Those are the questions we’re taking on in part two of our retinoids two-parter. The answers, as you might expect, are complicated. Because as it turns out, “retinoid” is a catch-all term for a bunch of different types of compounds, all of which work in slightly different ways. And on top of that, the testing required to demonstrate efficacy isn’t exactly h...
Nov 12, 2024•1 hr 2 min•Transcript available on Metacast That little bottle of retinol serum sitting on your bathroom counter - what do you know about its history? This week, we’re digging deep into the man behind the medicine, renowned dermatologist Dr. Albert Kligman, and the unethical research he conducted at Holmesburg Prison in the mid-20th century. Kligman’s research program at Holmesburg spanned decades, involved dozens of experiments (including tretinoin) and thousands of individuals, received ample funding from public universities...
Nov 05, 2024•57 min•Transcript available on Metacast When the Massachusetts Institute of Technology admitted in 1999 that they had discriminated against women on its faculty, it sent shockwaves throughout institutions of higher learning across the country. In this TPWKY book club episode, Pulitzer Prize-winning journalist Kate Zernike joins us to discuss her book The Exceptions: Nancy Hopkins, MIT, and the Fight for Women in Science , which details the sequence of events that led sixteen scientists to demand the equality that had...
Oct 29, 2024•56 min•Transcript available on Metacast Stiff person syndrome, like many rare diseases, does not get nearly the same amount of screen time or name recognition that other, more common diseases do. For many people, Celine Dion’s announcement of her diagnosis with the condition in 2022 marked the first time they had heard of it. This limited awareness surrounding stiff person syndrome marks just one of the many challenges keeping this disease and other rare disorders in the dark. In this episode, we attempt to shed some light on st...
Oct 22, 2024•1 hr 23 min•Transcript available on Metacast Five years ago, we asked you all to ask us anything, and you delivered. We answered dozens of listener questions, like how we first met, our favorite quarantinis, where we were in our career journeys, and so many more. But in the years since that first “ask us anything”, a lot has changed for both of us! So we’re coming back to you with the answers to more of your probing questions, like “what disease names would make good person names?”, “where are you in the...
Oct 15, 2024•1 hr 21 min•Transcript available on Metacast How is it that we can’t remember where we put our keys or the name of the person we just met, but we can recall in excruciating detail the embarrassing interaction we had at the grocery store ten years ago? Sometimes it seems like our memory works against us more than it does for us. But, as it turns out, this aspect of our memory is more a feature than a bug, and the key to understanding the difference may lie in our evolutionary history. Dr. Charan Ranganath , Professor of Psychology and Neuro...
Oct 08, 2024•57 min•Transcript available on Metacast One day, you’re enjoying a beautiful hike through the tall grass. A few months later, you find yourself in anaphylaxis from a post-hike hamburger. The culprit: a tick bite. In this much-requested episode, we take on alpha-gal syndrome, the red meat allergy triggered by the bite of a tick. Sometimes science is stranger than fiction. How exactly does an encounter with a tiny arachnid cause your throat to swell up and your skin break out into hives hours after eating red meat? Is it all red meat? I...
Oct 01, 2024•1 hr 10 min•Transcript available on Metacast For life on this planet, iron is not optional. It is essential. When our iron levels are low, we can get sick, and when they get really really low, we can even die. But you know what they say, too much of a good thing can be a bad thing. In the case of iron, the genetic condition hemochromatosis is often to blame for iron overload, but why is too much iron a bad thing? In this episode, we explore that question and many others, starting with why iron is a biological non-negotiable and how a lack ...
Sep 24, 2024•1 hr 13 min•Transcript available on Metacast Phosphorus is an element that wears many faces. Its overuse as a fertilizer has polluted freshwater ecosystems, transforming rivers and lakes from thriving communities to lethal zones devoid of life. Its role as an explosive has brought fiery death and suffering to many during times of war. And its dwindling global supply poses an existential threat to humanity. Because phosphorus is not just a destructive force - it is essential for all of life on this planet. In The Devil’s Element: Phosphorus...
Sep 17, 2024•49 min•Transcript available on Metacast The stethoscope. It’s iconic. You’re playing Pictionary and you pull the “doctor” card? Easy - sketch a stethoscope. Need a last-minute Halloween costume? Easy - throw a stethoscope around your shoulders. Google image search “doctor” and you can count the number of stethoscope-less doctors on one hand. How did this instrument become so emblematic of the field of medicine? What can it tell us about our heart and lungs? And is its future under threat? That’s where this episode comes in. We explore...
Sep 10, 2024•1 hr 18 min•Transcript available on Metacast “Is it gonna be poop or is it gonna be barf?” It’s the question we all fear during a bout of food poisoning when time is of the essence and a decision has to be made before it’s made for us. Often, the germ forcing this question upon us is none other than the dreaded norovirus. First called “winter vomiting disease” for reasons obvious to anyone who has been unfortunate enough to become infected, norovirus now conjures up images of puking passengers aboard cruise ships or oysters on the half she...
Sep 03, 2024•1 hr 14 min•Transcript available on Metacast In the pre-antibiotic era, tuberculosis was one of the biggest killers humanity ever faced. The specter of the ‘great white plague’ hung over towns and cities across the world, cities like New York whose population boom in the early 20th century paved the way for this deadly disease to spread throughout crowded tenements. As tuberculosis rates in NYC reached a breaking point, city officials sought to solve the problem by establishing a sanatorium on Staten Island. But they quickly ran into an is...
Aug 27, 2024•1 hr•Transcript available on Metacast In last week’s episode/love song to poison control centers, we journeyed through the history of these centers, from idea to institution. This week, we pick up where we left off by taking stock of the incredible impact that poison control centers have had on public health and individual lives. We also get a thrilling behind-the-scenes look at the operational side of things - who is on the other end of the line when you call poison control? How do they know so much and where do they get their info...
Aug 20, 2024•54 min•Transcript available on Metacast If you’ve ever called poison control, you probably already have a deep appreciation for the voice on the other end of the line who provides solid answers, emanates calm, and empowers you to take whatever steps necessary to be safe and healthy. If you haven’t, this episode will turn you into a superfan anyway. How did this incredibly valuable yet often overlooked service come to be, and why did it arise when it did? In the first of what ends up being a two-part ode to poison control centers, we e...
Aug 13, 2024•50 min•Transcript available on Metacast Roads are essential to our modern lives, so much so that they largely exist in the background of our minds. When we do think of roads, we’re either complaining about traffic or celebrating them for enabling our restless need to explore. Can you imagine if all of the world’s 40 million miles of roads were suddenly erased? Chaos for humanity. But a boon perhaps to natural ecosystems. In Crossings: How Road Ecology is Shaping the Future of Our Planet , author Ben Goldfarb takes readers on a fascina...
Aug 06, 2024•55 min•Transcript available on Metacast Think of an infectious disease. What comes to mind? A viral infection like influenza? Or a bacterial illness like cholera? Maybe some of you thought of a fungal pathogen or a parasite. But how many of you thought of a cancer? In this episode, we explore the bizarre, stranger than fiction story of devil facial tumor disease (DFTD), a transmissible cancer that has devastated Tasmanian devil populations over the past few decades. And when we say transmissible cancer, we don’t mean a cancer caused b...
Jul 30, 2024•1 hr 21 min•Transcript available on Metacast CW: discussion of disordered eating, eating disorders Did the word gluten manifest in everyone’s consciousness one day in 2010? Suddenly, grocery stores were filled with gluten-free crackers, cookies, buns, you name it. Everyone went on gluten-free diets or knew someone with a gluten intolerance or sensitivity. For some, it might seem that gluten-related disorders went from 0 to 60 overnight, but those who had lived with these illnesses for decades knew better. In this episode, we delve into the...
Jul 23, 2024•1 hr 28 min•Transcript available on Metacast Going to the doctor is probably not at the top of anyone’s list of enjoyable activities, but when we do go, we expect and deserve to be heard, to have our concerns listened to and our questions answered. However, most, if not all, of us have at some point felt unheard, dismissed, or even gaslit by our healthcare provider. What is it about the doctor-patient relationship or the way medicine is practiced today that enables this miscommunication or mistreatment, and how can we make things better? I...
Jul 16, 2024•54 min•Transcript available on Metacast 
