Dr. Hukum Singh is a forest physiology and climate change scientist associated with the Forest Research Institute in Dehradun, India. His research covers eco-physiology, plant responses to abiotic stresses, climate-smart forestry, forest fire, climate change adaptation and mitigation, urban pollution, and more. Dr. Singh has authored over 100 publications, including research publications, review articles, books and book chapters, and conference proceedings with journals and publishers of international repute. 

Dr. Narendra Kumar earned his Ph.D. in plant physiology from G.B Pant University of Agriculture and Technology, Pantnagar, India. His research work focused on the plant response to abiotic stresses. Later, he served as Assistant Professor in various reputed academic institutes, especially Surajmal Aggarwal (Pvt.) Kanya Mahavidyalaya, Kichha US Nagar, Dev Bhoomi Group of Institute, Dehradun, India; Uttaranchal University, Dehradun, India; Doon (PG) College of Agriculture Science and Technology, Dehradun, India. He also worked as a Research Associate at Forest Research Institute, Dehradun. His research areas focus primarily on Plant Physiology, ecophysiology, plant response to abiotic stresses, climate change adaptation and mitigation, functional traits, and climate change modeling. He has supervised many M.Sc. students, and many more are under his supervision. He has published various papers/chapters/articles in national and international peer-reviewed reputed journals with high impact factors. He has edited numerous books with international publishers. He has served as an Associate Guest Editor for Frontiers in Plant Science for the special "Rhizophereic Manipulation for Sustainable Agriculture" issue. He was also engaged as a Project Scientist at the Plant Physiology Discipline, Forest Genetics and Tree Improvement Division, Forest Research Institute in Dehradun, India. Currently, He is working as an Assistant Professor at the College of Agriculture, Kyrdemkulai, Central Agriculture University (I), Meghalaya.