Esta serie de cartillas son importantes para el cacaocultor porque muestran varios aspectos que se deben tener en cuenta en el cultivo de cacao para la prevención y reducción de cadmio. La primera cartilla aborda los conceptos básicos, definiendo el cadmio y explicando su presencia en la naturaleza y su origen. También se describe cómo este elemento afecta la salud humana, cuál es la normativa internacional sobre el cadmio en el cacao y los criterios de manejo de cadmio en la industria cacaotera.

Wilder Yesid Escobar Alméciga was born in Cundinamarca, Colombia and holds a B. A. in business administration from Simpson University, California and a masters degree in applied linguistics to TEFL from Universidad Distrital Francisco José de Caldas, Bogotá. His work experience includes teaching at all levels from elementary school, to postgraduate courses in both the United States of America and in Colombia. He is currently working as an assistant professor for the undergraduate Bilingual Education Program at Universidad El Bosque leading the research processes on Bilingual Education. His research publications address social issues through discourse analysis in English as a foreign language teaching and learning. For the last two years, he has been a member of the research group Educación Universitaria Unbosque.