内容简介：
With an unparalleled array of science topics to choose from, Discovery Channel School Science puts the fascination of the natural world at students' fingertips. Fun, fast-paces, high-interest text and vibrant photography in a varied format bring to life the wonders of nature as young scientists learn about the important historical figures, ideas, and discoveries that help researchers understand the past and keep science moving toward the future. Activities abound and insights await in Discovery Channel School Science Water has shaped Earth throughout its long history. Water has carved canyons, built deltas, and hollowed out caves. Discover the fascinating interactons between land and water.