Part of the Understanding Our Environment project that is designed to engage students in investigating specific environmental problems through concrete activities and direct experience, students work individually and in groups to plan a future community in order to gain an understanding of how greatly increased human populations impact resources, energy, food, water, air, and the living environment. The objectives include: discovering the reproductive potentials of living organisms and considering the relationship between population growth and limiting factors in environments; determining how human population growth affects resources; understanding the extent to which people can live in harmony with their environment and the way people modify the environment to fit their needs; understanding the components of a sustainable society and the role technology plays in maintaining the balance; understanding the characteristics of societies and the effects of change on cultures and lifestyles; investigating the use of resources and the impact on the environment of human populations in different countries and regions; describing the dynamics of human population growth by comparing demographic measurements of human populations in different places and times; and investigating what is being done throughout the world to solve problems caused by increased population. (JRH)