This illustrated discussion of global positioning systems (GPS) covers their development and uses for navigation, rescue, military operations, recreation, and geocaching.
What country or culture does the food you eat originate from? Learn about how migration, history, and culture intertwine with the food we eat in the book From Your Table to the World. This book takes students on a journey across the world to learn about how cultural traditions spread and influence the food we eat today.
Explore the evidence and opinions behind the headlines on climate change. In Shaping the Debate: Defining and Discussing Climate Change readers will learn about the science behind the causes and effects of Earth’s changing climate and understand the political context. Then, decide where YOU stand on this important issue.
What will the weather do today? In Science Masters: Weather Prediction, readers will learn about ways people have developed to predict the weather, from looking at the sky to running models on a computer. Temperature, pressure, and wind speed are among the factors that determine whether to look out for sunshine or a tornado. Weather prediction not only helps you plan your day, but it can also even save lives!
Some planets are cold, dark, and lifeless. Not Earth! Our world is full of light, heat, and motion. What makes the difference? Energy! Energy flows through growing plants and blowing winds. It powers your body and the machines you use each day. Discover how the sun's energy travels to Earth and how it is stored and used by living things. Learn why heat in our atmosphere is rising and what people can do to control it.
