National Geographic Desk Reference to Nature's Medicine
Steven Foster is the best-selling author ofTyler’s Honest Herbaland the award-winning101 Medicinal Herbs.He is a photographer, consultant, and lecturer with three decades of experience in the herbal field.Rebecca L. Johnson has authored more than 60 books for adults and children on diverse scientific subjects ranging from polar exploration to climate change and has received national awards from Scientific American and the National Teachers Association.