Exploremos los minerales de la Tierra (Exploring Earth's Minerals)

When winter hits, many people in colder climates spend most of their time indoors. But what do wild animals do? Some animals spend winters hibernating. Beginning readers will learn what hibernation is, why some animals hibernate and others don't, and how hibernating animals prepare for their long sleep. Full-color photographs grab readers' attention and allow them to draw connections to the narrative. Readers will love learning about this mysterious, restful time in some animals' lives.

Un breve vademecum de consejos, aforismos, máximas, citas célebres y refranes comentados, de utilidad para ayudar a alguien que comienza como librepensador, libertario o anarquista, también para los que ya llevan tiempo porque lo obvio en ocasiones se olvida, por obvio, precisamente y para el público en general interesado en estos temas.Deliberadamente se ha tomado la estructura y el título del Camino de Escrivá de Balaguer, bastante alejado del Anarquismo, pero no de lo espiritual (por ello este libro no es un sacrilegio), y espirituales lo fueron algunos anarquistas célebres como...

"El polígrafo abate Vicente Requeno y Vives, jesuita aragonés expulso y apasionado neoclásico (Calatorao, 1743-Tívoli, 1811), se dedicó intensamente en Italia a restaurar todo tipo de artes grecolatinas, consiguiendo un notable éxito en la técnica pictórica del encausto. Por el contrario, su obra filosófica ha quedado inédita en su totalidad hasta el 2008, en que Prensas Universitarias de Zaragoza editó sus Escritos filosóficos. Ahora, y con motivo del bicentenario de su muerte, presentamos un libro colectivo en el que una veintena de historiadores profundizan en la vida y la...

For ages, the idea of machines that think and act on their own has gripped scientists, thinkers, and the general public. This book explores the history of artificial intelligence (A.I.), and how science fiction is quickly becoming science fact. It examines the technologies involved in A.I. and its inevitable effects on work, life, health, and many other aspects of human society. Rooted in history and science, this book provides an inside look at a topic that captivates engineers, scientists, and dreamers, but also raises important ethical issues and challenges how we see ourselves and our...

Follow a day in the life of two children from different cities! This entertaining title has been translated into Spanish and encourages young readers to practice time measurement skills and early STEM themes, like reading analog and digital clocks. Familiar images and fun practice problems will have young readers thinking about how they can measure time throughout a day in their own lives!