Jump into orbit around some amazing objects in our solar system: dwarf planets! Take a fact-filled flight around Pluto, Ceres, Eris, Haumea, and learn what makes them so special. Explore… More →

Four titles have just been added to Poet's Workshop, a series that invites young readers to explore the world of imagery, exciting language, patterns, and form. With helpful exercises and… More →

For many animals, danger lurks in every corner of the rainforest. From brightly colored poison-dart frogs, whose poison is used by hunters to tip their arrows, to snakes and spiders with… More →

A hungry polar bear is one of the most dangerous animals you will meet. A marine mammal, it hunts mostly seals on the sea ice in the Arctic. Read all about their amazing sense of smell, their More →

The extreme climates of the North and South Poles make the polar oceans unlike any other bodies of water on Earth. Despite the severe conditions, an amazing diversity of wildlife thrives in… More →

Police dogs are trained to do many different jobs. Some patrol, some are used to attack, and others are used to sniff out illegal substances. Find out how police dogs serve and protect… More →

Learn about the brave people who make their living protecting their fellow citizens in this essential police force careers guide. Detailed bios and descriptions of operations and incidents… More →

Police officers are the protective barrier standing between the public on one side and lawlessness on the other - the so-called "thin blue line." A high-stress job, officers face daily… More →

Political Leaders chronicles the dramatic achievements of female political leaders from around the world. Countries, cultural traditions, and ideas explored include the role of Muslim women,… More →

Political maps are often the first kind of maps children learn about. These maps identify the boundaries of countries, states or provinces, and cities, as well as such physical features as… More →