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Freitas & Freitas -Nature and Science Education red when its emitting source moves away from the person who observes it (Hurwic, 2000). This theory foresees that the origin, the beginning of the universe, was through a great explosion, which happened about 15 billion years ago. Ever since the universe has been continuously expanding, in all directions, with its average temperature decreasing continually. In spite of the polemics raised by this theory, it has been strengthening with countless discoveries and astronomical observations. The possibility of the 'whole' to emerge from 'nothing', of the unmasking of dynamics of the creation of universe, close to the singularity, being projected real and virtual sceneries of the whole system starting from a part of the same, are emergent problems and of great significance in the current studies of cosmology (Silk, 1988).The main theories of the physical sciences in the 20th century, quantum mechanics, quantum field theory, and general relativity, are not independent. Despite the restrictive structures of these theories, their great accuracy and their capacity of prediction, project a promising future for natural sciences. 2 Invented little more than the 100 years, they have an obligatory presence in all the contemporary thought systems. Special highlight should be made for Gaston Bachelard (1884˗1962), Karl Popper (1902Popper ( -1994, and Thomas Kuhn 3 who put in check the methodological foundations of this scientific knowledge through questioning, configuring, reconfiguring, and defining the scientific methodologies prevalent until 1960.Bachelard is author of a vast and sophisticated philosophical work. Among the outstanding works are 'Novel Esprit Scientifict' (1996a) and 'La Formation de l'Esprit Scientific ' (1996b) published in 1934 and 1938, respectively. In these works, Bacherlad analyses critically the scientific dogmas existent at that time. He combats the empiricism, the idealism and the positivism, refusing the classical dogma of science's continuous progress and reaffirming the existence of epistemological ruptures through the methods and concept changes. Among countless contributions, he collaborated with the transformation of the scientific thought in a social reality, and his work can be considered one of the precursors of contemporary epistemology.Popper's main work, 'The Logic of the Scientific Discovery' was published in 1934. Through this book, he puts forward two basic subjects: the method of the empiric sciences, and how to distinguish and identify what 10 Freitas & Freitas -Nature and Science Education

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UNED (Universidad Nacional de Educación a Distancia) was the first Spanish university to introduce courses on sexuality from a social and cultural standpoint. The name and the aim of the course: Anthropology of Sexuality. It was inserted as an academic subject to accomplish the Social and Cultural Anthropology Bachelor´s Degree. And its teaching was established at the School of Sociological and Political Sciences (Department of Sociology I). The academic year 2003-2004 evinced the start of this innovating experience. For eleven years this educational and intellectual reality was alive: it last until the university implemented a new curriculum, the so called "Plan Bolonia". The plan had diverse derivations. For instance, it opened negotiations, and with it disagreements, among school and departments to distribute the new academic subjects of the educational project. At the final analysis, the outcome of the process was that Anthropology of Sexuality was eliminated of the degree on Social and Cultural Anthropology: "the Degree". Instead of it, Sociology of Diversity was introduced as a subject on the new sociological degree.