Journal Article

Climate Denialism on Social Media: Qualitative Analysis of Comments on Portuguese Newspaper Facebook Pages

Vaz, Paula, Ramos, Ricardo, Rodrigues, Maria José

2025

Overview

Climate denialism represents a significant challenge to public awareness and the implementation of effective environmental policies. In Portugal, as in other countries, social networks have been the place where denialist ideas are disseminated, influencing the public perception of the climate crisis. This research aims to understand how denialist discourse manifests and spreads on digital platforms. The research question of this work is: how does climate denialist discourse manifest itself on social media in Portugal? This work has two objectives: (1) to analyze the arguments and discursive strategies used by climate deniers in comments on Facebook, specifically on the pages of the three largest Portuguese newspapers, and (2) to understand the social and discursive dynamics that underpin their beliefs. This work adopted a qualitative methodology that involved manual data collection during the month of September 2024. Posts about climate that were informative were selected. The comments were examined manually and categorized by type of discourse. This approach enabled capturing specific nuances and contexts of denial discourses, providing a deeper understanding of the phenomenon. The study concluded that (I) comments that use fallacies or rhetoric that deny the climate crisis tended to receive more “likes” and approval from users; (II) fallacies that do not offer scientific evidence to refute the existence of climate change were identified in all these comments.

• Publisher: MDPI AG
• Subject: Audiences / Climate change / climate denialism / Climate science / Denialism / digital / discursive strategies / fallacies / False information / Global warming / Literacy / perception / Qualitative research / Rhetoric / social / Social networks