The ability of students to go beyond facts and to think critically, while at the same time enjoying and valuing the learning process, is fundamental to science and environmentalism. This book provides enrichment activities for the science curriculum that provide concrete connections with important world events. Each activity is self-contained and provides everything the student needs to gain a basic understanding of a concept or to work through a project. The activities include innovative and traditional projects for both the bright and average, the self-motivated, and those who find activity motivating. A comprehensive teacher's guide included with each activity discusses the goal, student objectives, prelab discussion, guide to the investigation, vocabulary or glossary, additional resources, and suggestions for further study for each project. Topics covered include: ecology (food chains and food webs, the balance of nature, building a closed-system biome); energy (fossil fuel generators, nuclear reactors, solar collectors, solar cells, modern windmills, electrolysis of water); conservation and the Earth's resources (lighting, insulation, mining, water consumption, water pollution and treatment, oil spills, air pollution, acid rain, the greenhouse effect); human and animal populations; pollution; making a difference (recycling, being an activist); politics and economics; and games for concerned citizens. (JRH)