Catherine Herbert HowellCATHERINE HERBERT HOWELL, a former National Geographic staff member, has written extensively on natural history. She explored the relationships between people and plants in Flora Mirabilis: How Plants Have Shaped World Knowledge, Health, Wealth, and eauty and covered the importance of birds in culture in the National Geographic Bird Watcher's Bible. Howell serves as a master naturalist volunteer in Arlington, Virginia. JARED TRAVNICEK is medical illustrator with an MA in Medical and Biological illustration from the Johns Hopkins University School of Medicine. He is based in Indianapolis, IN, where he works as a neurosurgical illustrator. Read More Read Less