Collapsology is a scientific field that studies societal, economic and environmental collapses, which happen when systems can no longer support themselves or when they become too complicated. It looks at the different ways in which societies, economies and environmental systems can break down or collapse. For example, an environmental collapse can happen when too many resources are used, so there are not enough left for people to use in the future. An economic collapse can happen when a lot of people owe more money than they can pay back. A societal collapse can happen when different groups of people can no longer get along and it becomes difficult for people to do things like trade, make decisions, and keep the peace. Collapsology provides an understanding of these collapses, so that people can work together to prevent future collapses from happening.