This doctoral thesis focuses on analyzing photojournalism of climate change in the most relevant climate summits since their inception. It spans from 1995 to the present and is specified in the five most important climate summits, justified by the coverage developed, the informative peaks of the celebration dates, the attendance of participants, and the quantity and relevance of the agreements reached. The research is based on a content analysis of the images published in the Spanish El País and the British The Guardian newspapers, with the aim of understanding how this climate challenge is visually communicated in the media.From a final sample of over 850 photographs, the results obtained demonstrate that the subject of this research maintains a consistent presence in the journalistic agenda, increasing progressively over the studied intervals. A shift in visual representation is evident, with the photojournalistic approach surpassing the limitations of traditional collective imagery associated with climate change, which is characterized by the presence of endangered animals, pollutants, and extreme climate zones. The conclusions reveal a shift in visual focus towards experts, scientists, and public representatives, followed by activists and organized civil platforms. This leads to the identification of several new phases in the photojournalistic representation of climate change.