Climate change has been identified as the biggest global health threat of the twenty-first century. Hundreds of millions of people around the world currently suffer from allergic diseases such as asthma and allergic rhinitis (hay fever), and the prevalence of these diseases is increasing. This book is the first authoritative and comprehensive assessment of the many impacts of climate change on allergens, such as pollen and mould spores, and allergic diseases. The international authorship team of leaders in this field explore the topic to a breadth and depth far beyond any previous work. This book will be of value to anyone with an interest in climate change, environmental allergens, and related allergic diseases. It is written at a level that is accessible for those working in related physical, biological, and health and medical sciences, including researchers, academics, clinicians, and advanced students.