This elective laboratory science course explores man and his interactions with his environment. At the beginning of a new millennium, civilization has reached crossroads. Unable to halt the technologies that continue to exploit Earth’s resources, and facing the prospect of a continuing rise in the human population, we find ourselves in a situation where an enormous human environment experiment is being enacted. Environmental science stands at the interface between humans and the Earth: it explores the interactions and relations between them. The issues to be explored in include global warming, species extinction, air pollution, toxic wastes, overpopulation, recycling, water, waste removal, and tropical rain forests.