Mary Njenga is a Bioenergy Research Scientist at World Agroforestry Centre (ICRAF) based in Nairobi, Kenya and a Visiting Lecturer at Wangari Maathai Institute for Peace and Environmental Studies, University of Nairobi. Njenga is in the editorial boards of Resource Recovery and Reuse (RRR) series of International Water Management Institute (IWMI) and Urban Agriculture Book Series of the Springer pubishing house.