De natura

Who were the earliest Americans? When, how, and from where did they enter and spread across the continent? And what is their relationship to modern Native Americans? Anthropologists develop theories to answer these questions based on the evidence they discover. Their theories—and the discoveries that prove and disprove them—are highlighted in this fascinating volume, full of awe-inspiring facts and incredible breakthroughs. Readers will feel like anthropologists and archaeologists themselves as they read about bones and artifacts, and what they reveal about the ancient cultures that roamed...

El muchacho listucu que en los años cincuenta pastoreaba ovejas en las laderas de Peña Labra se convertiría en 2003 en presidente de Cantabria. Esta es su historia. Y nos la cuenta con ese estilo único que lo ha hecho popular y querido, con sentido del humor y naturalidad.Miguel Ángel Revilla nos dibuja una España de penuria y esfuerzo que ya no existe. Y relata con viveza cómo, con tesón, animado por el amor a la tierra que lo vio nacer, consiguió alcanzar las más altas responsabilidades. La semblanza que traza en estas páginas de personalidades como el rey Juan Carlos, José...

Concebido con el objetivo de facilitar a los estudiosos de la materia y al público culto en general una información rigurosa y actualizada de los conceptos fundamentales impartidos en las distintas ramas de la Ciencia de la Literatura, este BREVE DICCIONA

Reptiles y anfibios is one book in the Spanish-language Gran Atlas de la Ciencia series that covers today's most popular science topics, from digital TV to microchips to touchscreens and beyond. Perennial subjects in earth science, life science, and physical science are all explored in detail. Amazing graphics--more than 1,000 per title--combined with concise summaries help students understand complex subjects. Correlated to the science curriculum in grades 5-9, each title also contains a glossary with full definitions for vocabulary.