Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Performance art is art in which the actions of an individual or a group at a particular place and in a particular time constitute the work. It can happen anywhere, at any time, or for any length of time. Performance art can be any situation that involves four basic elements: time, space, the performer''s body and a relationship between performer and audience. It is opposed to painting or sculpture, for example, where an object constitutes the work. Performance art traditionally involves the artist and other actors, but works like Survival Research Laboratories'' pieces, utilizing robots and machines without people, also occur. Although performance art could be said to include relatively mainstream activities such as theater, dance, music, and circus-related things like fire breathing, juggling, and gymnastics, these are normally instead known as the performing arts.