Cómo hicimos el 17 de octubre

La Edad Media ha sido considerada un periodo de estancamiento del saber, sombrío y cruel. Jesús Callejo desmonta esta imagen con un apasionante repaso de la época: desde las bibliotecas perdidas y los textos malditos, a los increíbles avances tecnológicos como las lámparas perpetuas, los espejos mágicos y originales aparatos voladores pasando por los diabólicos autómatas que fueron ocultados a los ojos del gran público.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute...

Completo y riguroso panorama de las previsiones que, hechas por expertos en distintos campos, afectan al futuro más inmediato de nuestro planeta, desde la ecología y la demografía a la nanotecnología y la exploración espacial.

Seventeen Egyptologists and archaeologists probe the most compelling mysteries of ancient Egypt in this illustrated collection of 70 brief essays. Answers to age-old questions about Egyptian burial rituals, architecture, and royalty are provided, and recent discoveries are discussed—evidence that Tutankhamen was murdered, boats buried intact deep in the desert beside the tombs of the earliest kings, unexplained shafts inside the Great Pyramids aligned with the stars, and a massive mausoleum built for the many sons of Ramses II. The essays are supplemented with evocative photographs,...