Season 1, Episode 11: Germ Theory, Microbes cause disease! Simple, Right?

Season 1, Episode 15: The Vacation Discovery that Changes the World.

For this episode of 4Ps: Plants, Pests, Parasites and People, Dr. Kate Martin follows the strange, moldy, world-changing story of penicillin: from accidental observation to lifesaving medicine, and from one famous petri dish to a much larger cast of scientists, patients, and microbes. Along the way, we look at how antibiotics changed medicine, why fungi are such astonishing chemists, and why resistance reminds us that evolution is always in the room. It is a story about chance, curiosity, collaboration, and the tiny organisms that have shaped human history in ways we are still trying to understand.

Season 1, Episode 14: Tropical Plants in Florida, Who Knew?

South Florida’s tropical fruits are not just a glamorous little collection of produce that happens to like warm weather. They are really a lesson in how growing something and growing it well are not at all the same thing. Avocado, mango, lychee, longan, mamey, banana, passionfruit, and dragonfruit all bring their own baggage, frankly, whether that is drainage issues, flowering quirks, storm damage, trellising, pests, diseases, or the awkward little question of whether anyone is actually going to buy enough of it to make the whole thing worthwhile. And that is what makes South Florida so interesting. It is not just warm, and therefore magical. It is warm in a way that opens the door, but then everything else — the soil, the weather, the crop biology, the grower, and the market — has to decide what happens next.

Season 1, Episode 13:Cockroaches, A closer look at the insects we love to hate

In this episode of 4Ps, Dr. Kate Martin takes a closer look at cockroaches, the insects people think they already understand. From their strange biology and surprising diversity to the major pest species found around human spaces, this episode explores what cockroaches actually are, how they succeed so well alongside us, and why their reputation only tells part of the story. Unsettling, scientifically fascinating, and unfortunately very good at being cockroaches.

Season 1, Episode 12: CaMV, the most famous virus you've never heard of.

In this episode of 4Ps: Plants, Pests, Parasites and People, Dr. Kate Martin explores Cauliflower mosaic virus (CaMV)—a plant virus most people have never heard of, but one that quietly shaped modern plant science. From haunted-looking brassica leaves and aphid transmission to the famous CaMV 35S promoter, this is the story of how a crop disease became one of the most widely used molecular tools in plant biology. It’s a look at viruses, agriculture, and biotechnology through one surprisingly influential little pathogen.

Season 1, Episode 11: Germ Theory, Microbes cause disease! Simple, Right?

What changed medicine forever wasn’t a new drug or a sharper scalpel, it was learning to believe in an enemy we couldn’t see. In this episode of 4Ps: Plants, Pests, Parasites & People, Dr. Kate Martin tells the messy, human story behind germ theory: from “bad air” and public panic to cholera maps, hospital handwashing, pasteurization, antiseptic surgery, and the tools that eventually made viruses imaginable. It’s a history of microbes, but also of pride, proof, and the slow, hard work of getting humans to understand the world is much bigger and smaller than we thought.