Lágrimas de cristal

Los jovenes lectores se transportan dentro de un laberinto de un castillo antiguo directamente al corazon de una batalla con un malvado senor feudal y para cumplir la mision hay que encontrar la salida y descifrar el mensaje oculto. Estas aventuras sirven tambien como lecciones acerca de culturas y actividades del pasado, el presente, y el futuro.

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...

Plants are the living things that have been on the planet longer. How do they manage to protect themselves if they can't move? Explore the different mechanisms that plants use to survive in different habitats.

Ideal for young children. Sturdy books that will stand up to wear and tear with full-color illustrations and clear, simple text. Each one has a convenient carry-along handle.