Para los viajeros de éste tiempo. El propósito de la existencia.

The first major regional flora ever written in Spanish, Flora Mesoamericana is a collaborative effort of the Missouri Botanical Garden, the Instituto de Biologia of the National Autonomous University of Mexico, the Natural History Museum, London, and numerous specialists worldwide. The Flora describes, for the first time, all the vascular plants growing in the southeasternmost states of Mexico, including the Yucatan Peninsula, and all the Central American republics. Covered in this volume are families Rubiaceae to Verbenaceae: 11 families, 202 genera and 1,417 species.

The fear and the desolation that evaporize from the asphalt and embankment from the neighbor city at El Paso, Texas has turn Ciudad Juarez in a city of notorious fame. The deads, -some of them with names, a lot others without them-, still waiting that someone reply her, deaf deads, dumb authorities. The public opinion has its turn. Is our time to talk, suppose and expose solutions, guilties, ideas. From the elucidations of Watson and Crick, as far as seventies with the genetic revolution and the advances in molecular biology, we reach the nineties, where the human reproduction occupy a niche...

Biographies and bibliographies of members are included in many of the volumes. Lists of members are usually given on covers of the numbers.

«Nosotros somos los osos polares. La existencia humana está amenazada, como lo está la existencia de la mayoría de los seres vivos de la tierra. Cuando vemos a los osos polares desesperados sobre las placas de hielo, ésos somos nosotros.» George Lakoff. Lingüista. Profesor de ciencia del conocimiento y lingüística de la Universidad de California en Berkeley. «Efecto invernadero», «calentamiento global», «deshielo de los casquetes polares»... Tantas veces hemos oído estas palabras que han llegado a perder su sentido. Con la certeza de que el cambio climático es real, y con la...