the award-winning green science line introduces kids to green concepts such as recycling, alternative energy and climate change with 6 accessible, hands-on experiments. experiment with static electricity which causes lightning, build a desktop water cycle model, and even make clouds in your palm. watch air currents that produce wind and study the greenhouse effect and acid rain. add common household ingredients to complete the experiments. this kit includes weather experiment tools and instructions. recommended for ages 8 years and up.