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...

A retelling, in graphic novel form, of the myth of the Trojans who discover a gift of a giant horse from their Greek enemies.

Your lungs make sure that you use air wisely. Learn how the air passes from the lungs to the bloodstream in this story about your amazing body.

Ver sonreír a los niños y niñas es una bendición. Verlos contentos y disfrutando de la lectura es el mejor regalo para un padre o una madre. Mejor aún, que ellos mismos puedan realizar sus propias lecturas y aprecien la vida a través de personajes simpáticos como Rufina gallina, Tija la lagartija o el Señor Sapito. Deseo de todo corazón que puedan disfrutar de este libro con toda la familia.

It is time to learn about living things! Can you spot which things are living? Can you tell which things are nonliving? With images that are easy to identify and clear, simple sentence structures, this Spanish science reader simplifies scientific concepts for young readers. A fun and easy science experiment and Your Turn! activity provide more in-depth opportunities for additional learning. Nonfiction text features include a glossary and an index. Engage young learners with this dynamic text!