Dr.lsh Narang has done a wonderful job of writing this book from a scientific perspective. I sincerely applaud his efforts. I hope it will appeal to many people who would like to know scientific explanation for our rituals. I also think that the book will appeal to many western scholars as well as to our young generation who need to understand the urgency of keeping the environment pure so that we can live on this planet for long time. I would earnestly hope that the book will find its way too many homes and libraries in India and other English speaking countries.