Barcelona XXI siglos

Describes the U.S. Air Force Thunderbirds, including their planes, the maneuvers at their air shows, and team member duties. Written in English and Spanish.

Did you know that a piano is both a keyboard instrument and a string instrument? A piano has more strings than keys. Discover more intriguing facts in Pianos, a Musical Instruments book.

Los vikingos fueron unos marineros audaces y experimentados que mantuvieron en vilo todas las costas de Europa a lo largo de dos siglos, con sus incursiones en busca de tierras y de riquezas. También fueron buenos comerciantes y el primer pueblo europeo que inauguró la senda de los grandes descubrimientos geográficos. La parte más importante de su legado se conserva en los países escandinavos. Más allá de sus regiones de origen, la principal enseñanza que legaron los vikingos fue su capacidad de lograr grandes gestas con escasos medios materiales, a base sobre todo de arrojo y de...

"Some things are so huge or so old that it's hard to wrap your mind around them. But what if we took these big, hard-to-imagine objects and events and compared them to things we can see, feel and touch? Instantly, we'd see our world in a whole new way." So begins this endlessly intriguing guide to better understanding all those really big ideas and numbers children come across on a regular basis. Author David J. Smith has found clever devices to scale down everything from time lines (the history of Earth compressed into one year), to quantities (all the wealth in the world divided into one...