NoSweat Science Earth Science Experiments - No-Sweat Science Author:Louis V. Loeschnig Tsunamis, hurricanes, global warming: more than ever, children want to investigate the forces that affect Earth?and learn how to protect our planet. And this engrossing collection offers a world of information and exciting activities. Through experimentation, young scientists will really understand how plants give off oxygen and why life couldn?... more »t exist without them. They?ll build a seismograph; ?play dirty? with soil, sand, humus, and mud; filter water; and find out how mountains are formed with the help of some clay and newspaper. Plus, kids will make a difference as they discover earth-friendly ways to save and reuse old clothes, toys, and other household materials.« less