Energy is a vital part of our lives. It powers our computer, lights our home, and moves our car. It also costs a lot of money and pollutes our environment. In Energy: 25 Projects Investigate Why We Need Power and How We Get It, kids ages 9–12 learn about the history and science of the world's energy sources, from nonrenewable fossil fuels such as oil and natural gas to renewable sources such as solar and wind power. Sidebars and fun trivia break...

To a child, a city is a chaotic, vibrant community whose workings can seem quite mysterious. How did people create subways? How does the water get to the very top of a skyscraper? Is there any organization to a bustling metropolis? Cities: Discover How They Work gives kids a view into the inner functioning of urban areas. They'll learn about all the parts that come together to make cities work and how they've grown and changed since the very first...

Learn about earthquakes and volcanoes and how the earth's surface is always changing.

Planet Earth: Finding Balance on the Blue Marble with Environmental Science Activities for Kids introduces middle grade readers to all the parts of the natural world, including the oceans, the atmosphere, the earth, and everything in between. In this book, kids master ecology basics, such as the food web and animal habitats, while also learning about environmental issues such as wind and solar power, endangered species, climate change, and more. Stories...