The second half of the twentieth century was characterized by a progressive darkening of the canons of beauty, which seemed to question the white patterns on which they have historically been built. In Colombia, this was ...

De manera atávica, los biólogos trabajan en laboratorios, hacen trabajo de campo, se especializan en plantas o en insectos, por ejemplo, y ampliamente, hacen ciencia experimental y aplicada. En Colombia y en el mundo hay ...