El ciclo del nitrógeno (The Nitrogen Cycle)

What is matter and where can it be found? Everything in the world is made of matter, whether it is a solid, a liquid, or a gas. Important ideas about matter such as volume, mass, and how matter changes state are conveyed through a series of easy-to-do experiments.

Read Along or Enhanced eBook: Roberto Clemente is remembered as a one of the greatest baseball players who ever lived, but more than that, he was also a man who believed in equality for all. Readers will learn about his incredible life in this inspiring, Spanish-translated nonfiction biographical title. Children will enthusiastically want to learn all they can about Roberto's amazing life as the first Puerto Rican in major league baseball through vibrant images, intriguing facts, a helpful timeline, and a glossary that will assist in vocabulary improvement.

Diego y Patricia, una pareja de traficantes internacionales de obras de arte, son contratados por un millonario francés para realizar un trabajo «especial»: robar el Códice Calixtino, un manuscrito del siglo XII custodiado en la catedral de Santiago de Compostela. El Códice es mucho más que una guía para el peregrino. En sus páginas, oculto mediante una técnica medieval, se esconde un evangelio desconocido, donde se revelan datos inquietantes sobre la historia encubierta de la familia de Jesucristo, sus asombrosas relaciones de parentesco, los conflictivos orígenes del cristianismo, ...

Chilean edition of the exhibition of Alfredo Jaar (b. Chile) in Sweden at the Fine Arts Museum of Lausanne from june to september of 2007. The present edition gathers the translations of the essays into Spanish. Contains an essay by Adriana Valdés.