El eco del silencio

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.

Cuando Charles Darwin tuvo la valentía de embarcarse en el Beagle para dar la vuelta al mundo, sabía que esa odisea cambiaría su vida; pero no que su trabajo transformaría el panorama científico de su tiempo. En cooperación con la tripulación del barco, aquel viaje fue un camino de superación personal y profesional que le llevó, a su vuelta, a presentar con autonomía sus novedosas teorías acerca de la evolución, a pesar de la oposición que le esperaba.

Join the children in this book on a trip to the dentist. Going to the dentist can be fun, especially if you use addition to help you find answers to questions like these: How many teeth do you have? How many times should you floss your teeth each week? Make your next trip to the dentist an adventure with addition.

After a long trip through the Caribbean, full of conversations and complicities, the Londoner Eric Devon, his wife Nora and a lucid American journalist decide to travel to a Berlin--recovering from the disasters of the perverse effects of Nazism. In a city devastated by war, but full of life, the protagonists are waiting for a great surprise. This impressive time travel offers an unprecedented and refreshing view of Berlin in the late fifties. After a long trip through the Caribbean, full of conversations and complicities, the Londoner Eric Devon, his wife Nora and a lucid American journalist ...