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...

El poder de la Alegría conecta con la inocencia interior. La alegría es nuestro estado natural: despreocupado y feliz. En estas páginas, descubre el proceso interior de añadir amor a nuestros pensamientos que carecen de él, aprende a eliminar las resistencias y bloqueos a la paz mental e interior. La alegría es un compromiso con la vida que nace de la verdad interior y, al experimentarla, no sucede nada que no estuviera ya preparado en el corazón. La felicidad es una elección. Con este texto, aprendemos a dejar atrás las ideas decadentes y a desaprender aquellas estructuras mentales...

¡Los gorilas son los primates ma ́s grandes del mundo! Estos amables mami ́feros deambulan por la selva,viven en grupos grandes y buscan frutas y brotes de bambu ́ para alimentarse. Sube a los a ́rboles y conoce a estos poderosos y amigables primates.

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther. This 6-Pack includes six...

"Discusses how people make sense of Earth by making maps and introduces globes, flat maps, and the idea of making borders"--Provided by publisher.