Pratap Kumar Padhy, Professor and Head at the Department of Environmental Studies, Institute of Science, Visva-Bharati, Santiniketan, India is working on various aspects of Air Pollution and Health and has research experience of more than 30 years. He has published many research papers in internationally refereed journals, published three edited books, and several chapters in books. Prof. Padhy has also undertaken several research projects, including one international collaborative project. He was awarded the President of India Gold Medal for General Proficiency from JNU, New Delhi during 1995-1996. Soumya Niyogi, Professor of Biology and Toxicology at the University of Saskatchewan, Saskatoon, Canada is also an adjunct professor of Biology at the York University, Toronto, Canada. He is an Environmental Toxicologist with over 25 years of research experience specializing in the toxicology of metals/metalloids and polyaromatic hydrocarbons (PAHs). He has undertaken many government and industry funded research projects and supervised many Ph.D. and M.Sc. students. He is on the editorial board of two reputed Toxicology journals. Pulak Kumar Patra is an Associate Professor at the Department of Environmental Studies, Institute of Science, Visva-Bharati, Santiniketan. He has over 22 years of teaching and research experience in Environmental Science. His research interests include environmental geoscience, hydrogeochemistry and medical geology. He has published more than 50 research papers in journals and edited books. He has also authored three books and edited four books. Markus Hecker is a Professor and Canada Research Chair at School of Environment and Sustainability, University of Saskatchewan. He is also a member of the College of the Royal Society of Canada, and a visiting/guest professor at the Peking Union Medical College and Xiamen University, China. His research interest includes Ecotoxicology, Endocrine disruption and Environmental DNA. He is serving on the editorial board of many reputed journals. Markus has authored or co-authored over 170 peer-reviewed papers, review articles, editorials and book chapters. He is currently serving on the Board of Directors of the Society of Toxicology and Chemistry (North America)