Obedecer las reglas

La hibernación es un ciclo que algunos animales hacen cada año. La mayoría de la gente sabe que los osos hibernan. ¿Pero por qué hibernan? ¿Y qué otros animales hibernan? Hibernation is a cycle that some animals go through every year. Most people know that bears hibernate. But why do they hibernate? And what other animals hibernate?

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.

When people go to sleep, bats are just waking up. While young readers may recognize the image of bats in the night skies, where they live may be less familiar. This title takes readers inside bat roosts to uncover the fascinating facts about this creature. Readers will learn the basics of bat roosts—in caves and beyond—and how they help bats survive in the wild. The text also looks at bat’s appearance, behavior, and the crucial role they play in nature’s ecosystems—topics covered in most elementary science curricula. Diagrams, fact boxes, colorful images encourage learning.

Un joven profesor de arte, llega en mitad del invierno a Venecia, para completar sus estudios. En apenas cuatro días, es testigo del asesinato de un famoso falsificador de arte, se enamora de una mujer excepcional y conoce a personajes tenebrosos unidos por la clandestinidad del delito.

An introduction to what cowboys do, what their day is like, what they wear, what tools they use, and how people can become a cowboy.