Yo Manejo Un Quitanieves/I Drive a Snowplow

Presents a typical day of a bulldozer driver, with the safety equipment he puts on, the levers, beeper, and blades he uses in its operation, and what he does to get the bulldozer ready for the next day.

Until just over 150 years ago, northern Mexico extended thousands of kilometers farther than its current border with the United States. Many different indigenous groups flourished in that region before the Conquistadors arrived. What we know about their lives and customs is the result of archeological discoveries and the chronicles of the first Spanish priests and soldiers that had contact with them.

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...

El nuevo libro de la colección "Un mar de historias", editado en inglés, recorre la vida del Greco a partir de sus obras más conocidas. "El caballero de la mano en el pecho" cobra vida para explicarnos la historia de quien según algunas hipótesis fue su autor. Lo hace a partir de los detalles, paisajes y personajes que aparecen en retratos y pinturas del Greco, como "La dama del Armiño" o "El entierro del Señor de Orgaz".

What is matter and where can it be found? Everything in the world is made of matter, whether it is a solid, a liquid, or a gas. Important ideas about matter such as volume, mass, and how matter changes state are conveyed through a series of easy-to-do experiments.