Take a look behind the walls of these fascinating fortresses and learn how they were built to house hundreds of people and animals; how a young boy rose from lowly page to noble knight; and what life was like for the castle residents.

    More than 200 color images transport kids to intriguing places, and 115 pages of full-size National Geographic maps help them locate countries, cities, regions, and more.Created by the most trusted name in cartography, these colorful maps have been custom designed for middle-grade students. Boundaries, place-names, and data reflect the most current information available, and every map appears in the context of surrounding areas to ensure that a full picture of the world develops. Same-size physical and political maps make for easy comparisons and help youngsters understand how physical features influence patterns of human settlement and economic activity. Locator globes and color-coding make it easy for kids to keep track of where they are and quickly navigate from one region to another.Stunning images from space draw visual links between real-world scenes and cartography. Plus, an interactive Web feature links kids to the Society’s vast archive of maps, articles, photos, videos, music, languages, crafts, quizzes, and more. With a dynamic reference like this, homework has never been so fascinating.

    Carefully chosen text from Lewis and Cark's actual journals opens a fascinating window into this country's exciting history.

    . . each of these children has hopes and fears, dreams and beliefs. Their cultures are different, yet in many ways their daily lives are very similar, as are their hopes for the future and their ways of looking at the world.Over the past two years, a photographer and a teacher have traveled to more than 30 countries, meeting and interviewing children. Each child's story is recorded in this remarkable book, published to coincide with the 50th anniversary of the United Nations Children's Fund (UNICEF). Extraordinary photographs bring to life the children's families and homes, their clothes and food, their friends and favorite games, and other aspects of their daily lives.The children live in places as diverse as New York, Mongolia, and the Amazon Basin. These are children from both industrialized and developing nations, children from busy cities and remote rural communities, and children from tribal cultures. Their environments include mountains, deserts, rain forests, plains, and polar regions. Most live in families, but Suchart, a novice monk, lives in a monastery, and Tadesse, an Ethiopian boy, lives in an orphanage. Children everywhere will enjoy reading about the lives of these children who share their world.Those who want to make friends with children around the world can join the Children Just Like Me Penpal Club, details of which are included in this book. Part of the Penpal Club membership fee goes to support UNICEF, helping children all over the world.

    Much as Brainiac offered a behind-the-scenes look at the little-known demimonde of competitive trivia buffs, Maphead finally gives equal time to that other downtrodden underclass: America's map nerds.In a world where geography only makes the headlines when college students are (endlessly) discovered to be bad at it, these hardy souls somehow thrive. Some crisscross the map working an endless geographic checklist: visiting all 3,143 U.S. counties, for example, or all 936 UNESCO World Heritage Sites. Some pore over million-dollar collections of the rarest maps of the past; others embrace the future by hunting real-world cartographic treasures like "geocaches" or "degree confluences" with GPS device in hand. Some even draw thousands of their own imaginary maps, lovingly detailing worlds that never were.Ken Jennings was a map nerd from a young age himself, you will not be surprised to learn, even sleeping with a bulky Hammond atlas at the side of his pillow, in lieu of the traditional Teddy bear. As he travels the nation meeting others of his tribe--map librarians, publishers, "roadgeeks," pint-sized National Geographic Bee prodigies, the computer geniuses behind Google Maps and other geo-technologies--he comes to admire these geographic obsessives. Now that technology and geographic illiteracy are increasingly insulating us from the lay of the land around us, we are going to be needing these people more than ever. Mapheads are the ones who always know exactly where they are--and where everything else is as well.

    But it doesn't really. The moon revolves around the Earth. It takes about four weeks to make the journey, and as it travels round we can only see certain parts of it. Try the simple experiment described inside using an orange, a pencil, and a flashlight, and you'll understand why the moon seems to change.

    "Each spread is composed of full-color photos, sketches, and explanatory text covering the anatomy, behavior, and adaptations of birds and presented in a visually appealing manner that compels further page turning. The author leads us through all that is fascinating in our study of birds at a level of writing suitable for younger readers. A fine addition to school libraries at all levels."--(starred) Science Books & Films.

    From the Mona Lisa's hidden past to the history of Area 51, Do Not Open explores lost worlds, unravels secret codes, and lets readers step through the looking glass to see if they can handle the truth! AUTHOR BIO:

    These pages come alive with the details of the trip and the sounds, speed, and strength of the mighty locomotives; the work that keeps them moving; and the thrill of travel from plains to mountain to ocean.

    If you lived at the time of the Civil War--Would you have seen a battle?--Did you continue to go to school?--Was it hard to get food?This book tells you what it was like to live at the time of the Civil War from 1861 to 1865.

    Over 80 black-and-white illustrations bring Armstrong?s story to life.

    Their choices are limited by mountains, rivers, seas, and concrete. To understand world events, news organizations and other authorities often focus on people, ideas, and political movements, but without geography, we never have the full picture. Now, in the relevant and timely Prisoners of Geography, seasoned journalist Tim Marshall examines Russia, China, the USA, Latin America, the Middle East, Africa, Europe, Japan and Korea, and Greenland and the Arctic—their weather, seas, mountains, rivers, deserts, and borders—to provide a context often missing from our political reportage: how the physical characteristics of these countries affect their strengths and vulnerabilities and the decisions made by their leaders.In ten, up-to-date maps of each region, Marshall explains in clear and engaging prose the complex geo-political strategies of these key parts of the globe. What does it mean that Russia must have a navy, but also has frozen ports six months a year? How does this affect Putin’s treatment of Ukraine? How is China’s future constrained by its geography? Why will Europe never be united? Why will America never be invaded? Shining a light on the unavoidable physical realities that shape all of our aspirations and endeavors, Prisoners of Geography is the critical guide to one of the major (and most often overlooked) determining factors in world history.

    Born in Pisa, Italy, in the sixteenth century, Galileo contributed to the era's great rebirth of knowledge. He invented a telescope to observe the heavens. From there, not even the sky was the limit! He turned long-held notions about the universe topsy turvy with his support of a sun-centric solar system. Patricia Brennan Demuth offers a sympathetic portrait of a brilliant man who lived in a time when speaking scientific truth to those in power was still a dangerous proposition.

    With thousands of breathtaking photographs and unique visual catalogues of the features and phenomena that take place on Earth -- such as rocks, minerals, and mountains to tropical rain forests and the different types of clouds -- Earth contains the most up-to-date ideas on how our world works, a compelling review on the health of the planet, and unbelievable images of the world's most stunning features.

    From the siege towers and catapults employed by ancient invaders to the unmanned drones and stealth bombers used by today's armed forces, the mastering of superior technology has always played a critical role in determining an army's chances of success — or defeat.Following in the footsteps of DK's esteemed military history titles Military History is the definitive guide to the development of battlefield technology through the ages, from Bronze Age Mesopotamia to the War on Terror.Organized chronologically and by key military technology, Military History: The Definitive Visual Guide to the Objects of Warfare covers the iconic weapons, armor, equipment, and battles that have defined war through the ages, showing the impact of changes in military technology on the very fabric of history.