El mundo de la tecnología: Los inventos del siglo XX (Tech World: 20th Century Inventions)

«En un mundo violento, erizado de muros y excavado con fosos, el universo de Francisco de Asís carecía de torreones y murallas. Pobre de bienes y de poder, estaba en paz con todos, vivía como hermano de los seres, y a todos ellos dirigía una mirada llena de respeto... Sus ojos habían llegado a ser maravillosamente humanos... Su horizonte no era la cristiandad de su tiempo, con sus fronteras que defender, sino Jesucristo, a quien amar, y el ser humano a quien salvar». Eso fue lo que llevó a Francisco más allá de las fronteras de la cristiandad. En plena cruzada, partió hacia Oriente ...

When the Pilgrims landed near Plymouth, Massachusetts, in 1620 they were unprepared for the challenges they would face. Many Pilgrims died until Squanto, a Patuxet Indian, taught them how to survive. To give thanks for a good year, the Pilgrims threw a huge feast, later called Thanksgiving.

Most young astronomers know that Earth is located in the Milky Way galaxy, but they might not know what that means or what lies beyond. Understanding our galaxy and others will help them comprehend more about how the universe works. Your readers will discover many amazing and memorable facts about galaxies, including their differing shapes, numbers of stars, and constant movement. They'll especially love the mind-boggling images of the depths of space.

When President Thomas Jefferson bought the Louisiana Territory from cash-strapped France in 1803, he doubled the size of the United States without really knowing what he was getting. He dispatched Meriwether Lewis and William Clark and their Corps of Discovery to explore a territory that would include part or all of fifteen future states and to seek a water route to the West Coast. Westward expansion began immediately, all for the bargain price of 15 million dollars. This book richly explores this fascinating part of history.