A contracorriente

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 ...

Updated for 2020, great photographs capture children’s attention as they read about different ways animals use their voices, ears, eyes, and mouths in this cute book.

Texas has long been associated with two main industries: cattle and oil. Learning about these businesses is valuable as their development coincides with the growth of the state of Texas, and a boon in America’s economy as well. Additional features, such as an interactive reader response panel, make this topic a joy to explore.

¿Quieres saber cómo eran las peleas de gladiadores, cómo se construían los acueductos o qué significan las palabras "Mare Nostrum"? Pues estás de suerte... ¡Hoy, los chicos de la Hispania del Imperio Romano serán tus guías particulares! Te llevarán por las calles de sus ciudades y te mostrarán el gran circo, los talleres de los artesanos, los mercados, los templos y mucho más. ¡Juntos aprenderéis cómo era un día en la vida de esta increíble civilización de la antigüedad! Escrito por Pedro Pérez, profesor y creador del canal de YouTube "El cubil de Peter", donde divulga...