Los hoyos negros y la curvatura del espacio tiempo

The rapid growth of the discipline of aquatic ecology has been driven both by scientific interest in the complexities of aquatic ecosystems and by their enormous environmental importance and sensitivity. This book focuses on the remarkably diverse roles played by underwater plants, and is divided into three parts: 10 thematic chapters, followed by 18 case studies, and rounded off by three integrative chapters. The topics range from macrophytes as fish food to macrophytes as mollusc and microbe habitat, making this of interest to aquatic ecologists as well as limnologists, ecosystem...

El rostro de la Costa Brava es múltiple y cambiante: rocas afiladas por el viento y el mar, calas ocultas de aguas transparentes. Llàtzer Moix nos guía por un territorio fascinante que conserva todas las esencias del paisaje mediterráneo. Incluye apartados especiales sobre Girona, l’Empordà y la ruta de Salvador Dalí.

A collection of important works dealing with such a new theme which is the study and management of water resources.

Here is an intimate glimpse of the greatest scientist of our day, the brilliant physicist confined to a wheelchair whose "A Brief History of Time" has become the first worldwide scientific bestseller of the century. The story of Stephen Hawking's relentless quest for the secret of the origins of the universe will change forever the way you look at the stars . . . and your place among them.