His life started with interest in living world and continued with insect biodiversity. That was defined in my middle school when I was inspired by my enthusiastic biology teacher. Ever since, I have dedicated myself to study, learn, and discover more about living animals, particularly insects and related arachnids, ultimately to understand biodiversity and how species formed, evolved and became extinct. That eventually led me to study how they are related to humans and humanity. Incidentally, my good education in excellent schools and university provided me with the foundation for my rich academic/scientific life that was enriched and well prepared for building biodiversity science. My scientific life has been closely linked to study and research on diverse insects and related arthropods associated with mammals, birds and ultimately humans. My academic life at Penn State offered diverse experience in teaching, research and public services for 40 years. Continued my research on diverse flies and blood sucking ones like sucking lice and parasitic mites for which I discovered and documented many new species and developed their classifications along with finding how parasitic arthropods and host animals evolved together to this day. All my studies and researches have been written into large numbers of books and scientific papers. For later years my focus was directed to biodiversity science and its education and research of biodiversity and biodiversity loss. Now, I continue working on new ways to look at biodiversity, human sustainability, and sustainable development so that the dynamics of our life-support system would be sustained and eventually we could find ways to redirect anthropocentric zeal for slowing down the damages and maximize inventive humanistic capacity for sustaining our life support system and for blocking ultimate disasters of human species.