Piedra de toque

“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 horned dinosaurs face-to-face: Torosaurus had the biggest skull of any animal ever! Pentaceratops had five sharp horns on its head! Styracosaurus was as big as an ice cream truck! Plus, you'll get to know Centrosaurus,...

"Simple text and photographs describe jets, their design, and uses in both English and Spanish"--Provided by publisher.

Bloomsbury Scientists is the story of the network of scientists and artists living in a square mile of London before and after the First World War. This inspired group of men and women viewed creativity and freedom as the driving force behind nature, and each strove to understand this in their own inventive way. Their collective energy changed the social mood of the era and brought a new synthesis of knowledge to ideas in science and art. Class barriers were threatened as power shifted from the landed oligarchy to those with talent and the will to make a difference.

Escrito de manera concisa y llana, con ejemplos certeramente escogidos, anécdotas e ilustraciones tomadas de la historia de la cultura europea, acompañados siempre de análisis someros y ocurrentes, este libro enseña cómo la noción de belleza evolucionó desde su culto y fundación, en la antigua Grecia, hasta su patrón actual en que, a veces de modo sutil e irónico, penetra en todos los rincones de la sociedad y la cultura modernas.