La selva amazónica (Amazon Rainforest)

In this Spanish title, learn causes of extinction and what problems extinction causes for animals, wildlife, and humans alike.

Bright stars twinkle in the night sky. Have you looked up into the sky on a clear night and seen these tiny points of light? Did you know that there are many kinds of stars in space? Find out all about them in this Spanish-translated book.

Most of the Earth's changes happen over millions of years, but earthquakes can force significant changes to the land in just a few moments. Readers will learn the science of plate tectonics and its role in the development of earthquakes around the globe. They will also learn that not all rocks are created equal. In fact, rocks are all different ages! This Spanish-translated book concludes with images of the damage and destruction that earthquakes can cause.

What continues to expand to take up all the space it can? Gases! Gas is a state of matter, like a liquid or a solid. But it has properties that are quite different. In this Spanish-translated book, read all about the differences and what makes a gas a gas.

Discusses the difference between secrets that are fun to keep and those that make people unhappy, and encourages youngsters to confide in their parents or another trusted adult such painful matters as bullying or improper touching.

Dragonflies are large flying insects known for their brightly colored bodies and see-through wings. They are among the fastest insects in the world. Learn more about these amazing animals in Dragonflies, a Fascinating Insects book.

Planck consideró como tarea científica suprema la búsqueda de las leyes que rigen el absoluto, el invariante oculto en la realidad externa. Le cupo el privilegio de descubrir uno de esos elementos universales: el quantum de acción, la constante h.

El libro analiza el tema en dos partes diferenciadas y complementarias. A la primera corresponde la descripción de los planteamientos estilísticos del Romanticismo, mientras que la segunda aborda las cuestiones que afectan de forma más amplia a la comprensión romántica del la obra de arte. La articulación entre los aspectos teóricos e históricos de la época, el análisis de las cuestiones polémicas, el debate,implícito o explícito en el seno del reciente desarrollo historiográfico, son algunos de los rasgos que caracterizan a este libro, aportación original al estudio del...