Olivia Messinger Carril is an independent scholar who has been studying bees for more than two decades. Joseph S. Wilson is associate professor of biology at Utah State University and an expert on the evolution and ecology of bees and wasps. They are the authors of The Bees in Your Backyard: A Guide to North America's Bees (Princeton).
I highly recommend this book. It may change your life in ways you never imagined possible. ---David Gascoigne, Travels with Birds