The document describes an artificial life simulation called AntWorld that models the life cycle of ants. In AntWorld, virtual ants are born randomly on the screen and follow a simple set of rules that cause them to leave colored trails behind them. The trails then influence how other ants move. Ants can reproduce when they collide with each other. They also display basic emotions through color changes in response to the simulated temperature. The user determines the lifespan of the AntWorld simulation.