Scientific information – from the moment it is produced by the scientific community until it reaches the nonexpert audience through the newspapers – is submitted to a complex process of adaptation. In this paper, we investigate the process of accommodating the scientific information provided by a primary scientific source (a peer-review journal) into journalistic discourse (a newspaper). As case studies we analyzed four scientific papers published by the peer-reviewed scientific journals Nature and Science, which were simultaneously used as primary scientific sources by Latin American newspapers. We observed that the process of accommodation into a new space, journalistic space, represents a significant shift in the content of the texts, including information that appears, disappears and is transformed in the process; transformations in the lexica, the style and the argumentation; a change in the hierarchy of the information; a shift in the information emphasized and in the social impact it might have.