The book "Another Economy is Possible" examines new ways of organising work and life, from co-operatives, barter networks, and ethical banking to community currencies, shared time banks and solidarity network. Co-operatives such as The Cooperativa Integral Catalana (CIC) in Barcelona are used as examples of how this can work. With over 600 members and 2,000 participants, CIC acts as an umbrella structure for independent producers and consumers of organic food. According to environmental scientist Giorgios Kallis, CIC has its own conceptual mode of the economy, consisting of five co-centric cycles, with reciprocity and gift exchange at the core. This conceptual model is materialised into an alternative economy.