El espacio exterior

Explore outer space and learn about stars, galaxies, planets, asteroids and how these bodies are all related to one another. Featured in this book are photographs from outer space and related vocabulary.

A foundered Victorian ship looking for the fabled Northwest Passage holds a secret in its icy grave... When Dirk Pitt of NUMAr is almost blown to pieces in a lab explosion, he suspects sabotage. The lab in question belongs to a scientist hoping to use a rare mineral to combat greenhouse gases - but who would want to destroy our one chance to save the planet? However, there are those who will do anything to control such a valuable prize. Pitt's investigations take him to the Arctic in search of a clue to the origins of this precious mineral. There he and NUMAr colleague Al Giordino must battle ...

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.

Veteran’s Day is a day set aside to thank the men and women who risk their lives protecting America. Each year on November 11, we celebrate what they have done for our country. Learn more about the history of this important holiday, such as why it is on November 11 and what Americans do to celebrate.

1 cola larga tenía Argentinosaurus, 2 garras tenía Deynonichus... Un impactante recorrido desde el 1 hasta el 10, para descubrir cómo eran, cómo vivían y a qué deben su nombre los dinosaurios. Ilustrado por el paleoartista argentino Gustavo Encina.