Keith Seifert spent more than 40 years studying fungi on five continents. At Agriculture and Agri-Food Canada, he did research on microscopic fungi from farms, forests, food, and the built environment, to reduce toxins and diseases affecting plants and animals. He was president of the International Mycological Association, an executive editor of Mycologia, and associate editor of several other scientific journals. He lives near Ottawa, Canada.

Dr. Rob Dunn is Professor of Applied Ecology at North Carolina State University and the author of seven books, including Delicious, Never Home Alone, and A Natural History of the Future. He's written for Scientific American, Smithsonian Magazine, and National Geographic and regularly advocates for citizen science. He lives in Raleigh, North Carolina.