Planet Earth: 25 Environmental Projects You Can Build Yourself provides an engaging guide to the natural world and encourages children ages 9 and up to get their hands dirty and actively connect with the environment. It then introduces key environmental issues-wind and solar power, pollution, endangered species, global warming, and recycling-and posits potential solutions. Trivia, fun facts, and 25 captivating hands-on projects investigate ecology...

Over 2,000 years ago, ancient Greek scholars named seven of the most wondrous monuments to civilization, including the Pyramids of Egypt and Statue of Zeus at Olympia. Through the centuries these treasures were known as the Seven Wonders of the Ancient World. Because all but the Egyptian pyramids have been lost to the ravages of time, a new list of seven wonders was established in 2007. These monuments, including Machu Picchu in Peru and the Great...

"A hands-on project book all about renewable energy for young scientists looking toward the future! How do we heat our homes, light our rooms, and power our cars? With energy! And the type of energy we use matters to our health and the health of the planet. In Renewable Energy: Power the World with Sustainable Fuel, young scientists ages 9 to 12 learn how switching from nonrenewable energy sources to renewable ones can help make our homes, businesses,...