Paul Stamets is a mycologist - a mushroom guy. He's been hunting and researching edible and medicinal fungi for thirty years. But he doesn't have a PhD or work in a university lab. He's an entrepreneur and self-made scientist. His company Fungi Perfecti sells grow 'em at home edible mushroom kits, and most of the profits go toward funding his numerous fungi research projects. In the wake of the Deepwater Horizon oil spill, Paul thinks mushrooms could help clean up the oil and toxins, and heal the Gulf of Mexico's damaged ecosystem. Paul talks to guest host David Brown about saving the world one mushroom at a time.