This book focuses on modern topics of pediatric oncology. Climate change and global warming are linked to pollution and is becoming a major global threat to children's health especially in Asia. This book also discusses topics important for modern radiotherapy in pediatric oncology. There is a chapter on how to use a large public database Surveillance, Epidemiology and End Results (SEER) for public health studies of pediatric oncology. There are two pieces of prose related to community, health and medicine. This book is a part of a series discussing challenging cases facing oncology and public health: this is book 8. This book may interest physicians, public health workers and researchers. M.C.@ north of a sky blue Brooklyn harbor, 12.22.2015.