With this eco-friendly kit, the Power House Green Essential Edition by Thames & Kosmos will teach you about, and how to use heat and light energy from the sun, wind power, and electrochemical and plant energy. Thirty of the best experiments and ten important building projects from the original Power House kit are presented in this Green Essentials Edition. Children can learn about the timely issues of alternative energy and sustainable living, by conducting 30 experiments and building ten energy-related models: the power house itself, a greenhouse, a solar cell array, a passive solar collector, a solar oven, an air conditioner, a refrigerator, a hydrometer, a lemon battery, and a wind power generator. They can even sow seeds in the greenhouse! Ages 8 and up. By Thames & Kosmos