Crisis energética: El futuro de los combustibles fósiles (Energy Crisis: The Future of Fossil Fuels)

From art and architecture to politics, philosophy, and mathematics, "western civilization" owes a great deal to the achievements of ancient Greece, but what do we really know about this long-gone civilization? How did geography influence the politics of the Greek city-states? What's the difference between an agora and an acropolis? This book takes readers several thousand years into the past, when independent city-states ruled the Mediterranean Sea, to find the answers. Full-color photographs and maps, accompanied by accessible text, introduce readers to the many contributions the ancient...

This selection of riddles is just right: not too hard, not too easy, and all "dressed up" with beautiful illustrations.

Offers a description of Earth, the third planet from the sun, which includes information on its origins, composition, and unique characteristics.

Hop on that big red truck for a real adventure! Being a firefighter takes a lot of hard work. Early elementary readers learn about the important responsibilities it takes to be a firefighter--from the fire equipment to living in the fire station. With vivid photos and images, a timetable of firefighting history, informational, Spanish-translated text, and intriguing facts, this book will have readers engaged and eager to learn all about this stimulating occupation. This 6-Pack includes six copies of this title and a lesson plan.

Alucina con este libro donde gigantosaurus, velociraptores,braquiosaurus, diplodocus, triceratops y muchos dinosaurios más cobran vida bajo las mágicas lentes en tres dimensiones. Las detalladas ilustraciones, información objetiva y datos curiosos, unidos al novedoso visor 3D, te invitan a explorar, con todo lujo de detalle, un mundo natural lleno de criaturas fascinantes. Una colección entretenida y educativa para toda la familia.