El autobus magico Planta Una Semilla / The Magic School Bus Plants Seeds

Describes, in brief text and illustrations, the physical characteristics, habits, and natural environment of various species of reptiles.

Estudio histórico sobre uno de los primeros estudios florísticos realizados en Extremadura. La historia de la botánica es una disciplina muy relacionada con las materias médicas y especialmente farmacéuticas. En realidad, unas y otras son dependientes desde tiempo inmemorial. Hoy día cada vez más distanciadas, en el siglo XVIII y XIX, estuvieron fuertemente conectadas y el desarrollo de las ciencias botánicas se debió fundamentalmente a médicos y farmacéuticos, más tarde, a finales del siglo XIX y especialmente en el siglo XX, la botánica comenzó a estar dirigida y desarrollada...

Everyone has questions about our universe: How hot is Venus? Can you distinguish between a pulsar and a quasar? Is there a universe or a multiverse? Where do we fit into the infinitely grand scheme of things? How do we map the Cosmic Microwave Background? Most tantalizing of all: Is there anyone out there? This small volume encapsulates the terrifying hugeness of the cosmos into bite-sized particles that mere earthlings can understand. It takes you on a cosmic tour, shedding light on the most awesome of objects and places and explaining some very big ideas, concepts, and discoveries. It also...

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...