The interaction of human beings with the environment can cause unwanted injuries. The damage to the environment from people is a big problem carried from the past to the future. The healthy living of both parties in harmony is associated with "environmental awareness" and "preparedness". Lives can be saved with the rapid recognition and treatment of environmental emergencies such as disasters, injuries, and poisonings, which occur with increasing frequency, and with the right first aid. The book contains up-to-date information to help manage many emergencies that every person may suddenly encounter. It has been prepared as a resource book that can be used by everyone interested, especially health professionals, medical students, and first aid volunteers. The common purpose of all chapters in this book is to provide the reader with theoretical and practical information for early recognition of the clinical situation in the prehospital setting and emergency departments and the rapid initiation of appropriate treatment. Effective and safe interventions in environmental emergencies will reduce the risk of bad outcomes as in every emergency.