La Energía Solar (Solar Energy)

Follows the life and career of the French scientist who proved the existence of germs and their connection with diseases.

Eco-Friendly Energy Is Explained. The Most Current Information Is Provided While Establishing The Understanding That It Does Not Take Much To Make The World A Better Place.

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.

After several military accomplishments, Mirabeau B. Lamar entered the world of Texas politics. Elected president in 1838, Lamar faced a host of problems with mixed success. His advocacy for education laid the framework for public education in Texas.

El pueblo wixarica, tambien conocido como huichol, vive en dialogo constante con sus dioses. De su presencia en la vida ceremonial y cotidiana da cuenta este libro, en wixarika y en espanol, como forma de acercarse a la cosmogonia de nuestra tierra. The Wixarika, also known as the Huichol, live in a constant dialogue with their Gods. This book provides a look into their ceremonial and daily lives. The text has been written in Wixarika and Spanish as a means to provide a glimpse into the cosmogony of the Earth.

Ámbar y Azul, dos gemelas curiosas (aunque, a veces, demasiado graciosillas), emprenden un intrépido viaje en busca del misterioso ADN en compañía de Pío, un pollito sabio que conoce las respuestas a todas las preguntas. Los tres protagonistas se vuelven de tamaño microscópico y exploran una célula habitada por represores insufribles, ribosomas novatos, proteínas todoterreno y otras moléculas divertidas y estructuras celulares que ejercen un papel clave en los procesos que constituyen los fundamentos de la genética.

An award-winning first glimpse into the diverse natural world of mammals. This addition to the acclaimed About... series explains to children in simple, easy-to-understand language what mammals are, what they eat, and where they live. Beautifully detailed, realistic paintings by wildlife illustrator John Sill introduce readers to the huge variety of mammals, from the tiny white-footed deermouse to the large American bison. An afterword provides more details about the animals featured in the book. Parents and pre-school and primary-grade teachers will find this an attractive choice for...