Esta de Fossard is Senior Communication Advisor at the Johns Hopkins University's Bloomberg School of Public Health, Center for Communication Programs. She previously taught at the universities of Southern California and Ohio, as well as at George Mason University in Virginia. Ms de Fossard has served as an international freelance consultant for numerous projects using radio or television for behavior change or classroom education. Her role involves assisting with curriculum design, training, production, and evaluation of the media campaign. Her practical experience in using media for behavior change spans 60 countries in Asia, Africa, and Latin America. She is also a prolific author with more than 50 books, both for adults and children, to her credit. Ms de Fossard is currently working on two more books in this series, related to the use of television and distance learning for behavior change.