Energía del viento

Defines levers, explains their functions, and suggests simple experiments to demonstrate how they work.

Provides The History Of Biofuels, Different Uses, Positive And Negative Characteristics, And How They Will Impact The Future.

Follows the life and career of the French scientist who proved the existence of germs and their connection with diseases.

Hace ya varios decenios que Edith Pearlman viene reclamando un puesto entre los grandes cuentistas de todos los tiempos. Su modo incomparable de ver la realidad, su consumada maestria, su ingenio amplio y generoso, han dado lugar a que se la compare con Anton Chejov, John Updike, Alice Munro, Grace Paley y Frank O' Connor." Miel del desierto" constituye una asombrosa recopilacion de relatos y viene a ser una autentica celebracion de la autora. Sean cuales sean sus personajes, Pearlman los conoce a todos, intimamente, y nos los describe con insuperable generosidad. Su prosa, tan afinada como...

HIGH-INTEREST, LOW-LEVEL: Reluctant readers will be engaged from beginning to end as they explore the responsibilities and skills of the catcher in this 32-page nonfiction book. Side-by-side English and Spanish text and vivid, exciting photos show readers what it takes to fill this key position in baseball and softball. SPORTS BOOK FOR KIDS: Catchers squat and they throw. They often call the shots. But most importantly, they catch the ball! From catching fastballs to throwing out base runners, learn why catchers have the toughest job in baseball and softball. INCLUDES: Readers will be hooked...

El poderoso tridente del rey Tritón ha traspasado la barrera mágica que mantiene a los villanos encerrados en la Isla de los Perdidos. Aprovechando la ocasión, la eterna rival de Mal, Uma, hija de Úrsula, la bruja del mar, se ha propuesto adueñarse del preciado objeto y ha reunido una tripulación pirata junto a Harry, hijo del capitán Garfio, y Gil, hijo de Gastón. Mientras tanto, una tormenta se cierne sobre Áuradon. Cuando Mal, Evie, Carlos y Jay descubren que el tridente ha desaparecido, saben que tienen que hacer cualquier cosa por recuperarlo antes de que caiga en las manos de...

"Dino" Don Lessem brings readers face-to-face with various dinosaur species, detailing their habitats, way of life and how they became extinct. An acclaimed dinosaur expert, Don Lessem has written more than 30 children's books, writes a popular dinosaur column in Highlights magazine, and was an adviser for Jurassic Park. Take a trip through dinosaur time to meet these feathered dinosaurs face to face: The Caudipteryx had feathered arms and a tail that looked like a pom-pom! The Sinovenator may have used colorful feathers to attract a mate! The Microraptor may have used its feathers to glide...