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-paced, 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 Feel healthy? Germ free? Guess again. Invaders are slinking around your body right now, ready for a chance to replicate. These little invaders are big trouble in tiny packages. Viruses are everywhere. In VIRUSES, Discovery Channel takes you inside a virus to discover that there is nothing ordinary about these tiny troublemakers. Special Features: Almanac Amazing But True At-A-Glance Eyewitness Account Fun & Fantastic Maps Q & A, Scientist's Notebook Solve-It-Yourself Mystery Timeline Virtual Voyage