There was an awesome interview on Good Food this Saturday where they interviewed Paul Stamets a mycologist (someone who studies fungi, if you're not up on all your "-ologists") and author of Mycelium Running: How Mushrooms Can Help Save the World. Stamets is a proponent of eliminating pesticides in favor of using fungi that can repel crop eating insects in the fields and prevent termites from eating your house.
Stamets owns and operates Fungi Perfecti, an online store selling mushroom cultivation kits and supplies. Truthfully he's a total inspiration to anyone who follows the world of permaculture. His Ted Talk "6 Ways Mushrooms Can Save the World" will blow your mind!