From the ginormous, extinct Prototaxites to the web of mycelium stretching beneath our feet, fungi have always been all around us.

Although scientists estimate that only 10 percent of fungi have been discovered, these findings have proved fantastic. Some fungi are toxic. But others are tasty sources of protein or drive the production of bread, cheeses, and fermented drinks. Some make up medicines to treat health conditions. Others connect vast swaths of trees, capture pollutants in the water and soil, or grow into sturdy but lightweight building materials. Many fungi are even fun to look at—they might ooze blood-like sap, glow at night, and more. What else might fungi be able to do?

Karen Latchana Kenney digs deep into the expansive fungal world. Learn about how fungi evolved and became their own kingdom. Then explore the many known fungi and how we use them in food, medicine, technology, and more. Entire communities have sprung up around identifying mushrooms—maybe you’ll even be the next member of your local mycological society. From the most well-known mushrooms to the mycelium hidden beneath our feet, this in-depth text digs deep into the incredible fungal world.