Natural Disasters, 8th edition, is marked by major changes in organization and expanded coverage of weather and climate. The discussion of natural disasters is based on 4 main energy flows: 1) Earth's internal energy flow underlies earthquakes and volcanoes, 2) the external energy flow from the Sun fuels weather and climate including tornadoes, hurricanes, floods, wildfires, 3) gravity acts to pull down mass movements of earth and snow, and 4) impacts with asteroids and comets can have major effects on life. The book focuses on the Earth's natural processes and the disasters that occur.