EL VIEJO Y LOS GAVILANES

Explains the basic science of flight, the problems of getting vehicles into the air, different types of engines, and aircraft design, and includes instructions for making aircraft models.

A Swedish engineer arrives in Tenerife on a business trip. But it is Carnival time. Ullman soon learns that, during Carnival, one had better join the celebration.

Describes Formula One cars, including their design, features, and races. Written in English and Spanish.

From art and architecture to politics, philosophy, and mathematics, "western civilization" owes a great deal to the achievements of ancient Greece, but what do we really know about this long-gone civilization? How did geography influence the politics of the Greek city-states? What's the difference between an agora and an acropolis? This book takes readers several thousand years into the past, when independent city-states ruled the Mediterranean Sea, to find the answers. Full-color photographs and maps, accompanied by accessible text, introduce readers to the many contributions the ancient...