Obedecer las reglas

La hibernación es un ciclo que algunos animales hacen cada año. La mayoría de la gente sabe que los osos hibernan. ¿Pero por qué hibernan? ¿Y qué otros animales hibernan? Hibernation is a cycle that some animals go through every year. Most people know that bears hibernate. But why do they hibernate? And what other animals hibernate?

El chocolate es una golosina sabrosa. ¿Pero sabías que el chocolate viene de una vaina de cacao que crece en un árbol? Sigue cada paso del proceso para descubrir cómo una vaina de cacao se transforma en chocolate. Chocolate is a tasty treat. But did you know that chocolate starts as a bean growing on a tree? Follow each step in the process to discover how a bean becomes chocolate. Now in Spanish!

How are crayons made? Clear wax is melted in a factory. Once it's melted, color is added to it, it is poured into crayon-shaped molds, cooled, and wrapped in a paper label. Sorted into sets, the brightly colored crayons are boxed and sent in trucks to stores to be sold to you.

Un nuevo caso de la detective Sonia Ruiz. El lado oscuro es la segunda entrega de la colección SeisDoble, escrita por uno de los grandes del género negro español que vuelve a demostrarnos aquí por qué es uno de nuestros narradores más leídos. 'Esta es una de mis mejores novelas', asegura el autor, 'porque la he escrito para mi placer y diversión, y me lo he pasado tan bien escribiéndola que me he olvidado del lector, cosa poco frecuente en mí'.

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...

In the 1500s, European explorers arrived in Texas in search of gold and glory. The Spanish were the first Europeans to arrive. Readers get to discover early Texas history in this fascinating nonfiction book that uses colorful images, intriguing facts, supportive text, and an accommodating glossary, index, and table of contents to introduce readers to various explorers such as Christopher Columbus, Cabeza de Vaca, Francisco Vazquez de Coronado, and La Salle. Children will be excited and engaged as they read through to also learn about the many American Indian tribes of the past, including the...

"This photo-illustrated book for early readers describes the wetland ecosystem. Includes picture glossary and index"--