This volume includes eight chapters that provide updates in the field of environmental research. Chapter One deals with the subject of applied bioethics, providing historical and contemporary environmental examples. Chapter Two presents different field and experimental studies based on fluorescence spectroscopy addressing the spatio-temporal dynamics of dissolved organic matter in headwaters of North Patagonia. Chapter Three reviews the recent advancements in the field of small RNA delivery in plants and discusses the advantages, limitations and successes of various delivery methods along with their applications in crop improvement. Chapter Four describes the factors that pose threats to floodplain fisheries in Bangladesh and strategies to overcome these threats. Chapter Five explores the preparation and properties of natural fiber-reinforced castor oil-derived polyurethane foams and their applications. Chapter Six discusses the role and long-lasting effect of seasonal flooding in phytoplankton ecology of floodplain lakes along the Middle Daugava River at Daugavpils, South-East Latvia. Chapter Seven evaluates the surface water quality of Kk Menderes River Basin, located in Turkey, using factor analysis and water quality index methods. Finally, Chapter Eight investigates the effect of nanomagnetite, hydroxyapatite, and nanocomposite particles on wheat.