Interactive Science Library : Science comes alive with Britannica and the amazing SD-X Reader. Touch pages with the SD-X REader to hear thousands of fun facts. Learn how volcanoes erupt. Land on Titan with a space probe. Find out what's in your cranium. Explore our universe with Encyclopedia Britannica - a world leader in teaching science to kids. Colorful illustrations and audio engage young learners. Older students explore at their own pace. Correlates to grades 5 to 8 science curriculum.