Disaster nursing and emergency preparedness has always evolved to meet the unique learning needs of nurses across the globe and the fourth edition of this hallmark text promises to be the most comprehensive ever. This book holds us to the highest standards ever with an ambitious goal—to once again provide nurses, nurse midwives, nurse practitioners, and nurse executives with the most current, valid, and reliable evidence-based content available. The book presents a broad and comprehensive overview of existing domestic and international disaster health policy coverage. The goal is simple—to improve population health outcomes following a disaster event or public health emergency. Every chapter has been carefully researched, fact-checked, reviewed by subject matter experts, and matched to the highest standards in disaster education. The book contains a significant amount of new content and strives to expand the focus as nurses to: acknowledge anthropogenic climate change, deepen our understanding of the importance of global disaster risk reduction and mitigation strategies, continually expand the international scope of the book to meet the needs of our global nursing colleagues, address the growing threat of pandemics, and increase our awareness of the health implications of urban civil unrest and community violence. Several new chapters have been added addressing critical topics such as public health emergencies involving community violence and civil unrest; nursing in disasters, catastrophes, and public health emergencies worldwide; disaster nursing and the 2015 UN landmark agreements; and national disaster nurse readiness. The target audience for the book is all nurses—making every nurse a prepared nurse—staff nurses, nurse practitioners, educators, and administrators.