How Do You Measure Time?

Provides an overview of the design, uses, weapons, and equipment of U.S. Navy submarines. Written in English and Spanish.

Written in a vivid and accessible style, this history book addressed to young readers focuses on one of the most relevant periods in Mexican history: that of the country's strife for independence from Spain. In addition to its descriptive historical account, the book includes charts, illustrations, and a timeline of main events from 1808 through 1821 that help make the information even more entertaining and clear for children.

Un práctico libro que engloba diferentes contenidos, con explicaciones muy sencillas e ilustraciones adaptadas, para tratar los temas preferidos de los más pequeños. Con esta enciclopedia podremos resolver las dudas más diversas con claridad y precisión.

Provides The History Of Biofuels, Different Uses, Positive And Negative Characteristics, And How They Will Impact The Future.

The sun is responsible for all life on Earth, but what exactly is it? Our star is an amazing force that can be as dangerous as it is important. From solar flares to the threat of blowing up altogether, the sun is one of the most interesting things in our solar system. Readers take a trip to the sun to see how it works and exactly what it is made of. They’ll learn about the life cycle of a star and see just how long we have until we have to find a new planet to call home. Don’t worry, they’ll be happy to learn that (hopefully) we have millions of years left!