Twitter is a key site for understanding the highly polarized and politicized debate around climate change. We examined large datasets comprising about 15 million tweets from different parts of the world referencing climate change and global warming. Our examination of the twenty most active users employing the term ‘global warming’ are likely to be automated accounts or bots than the most active users employing the term ‘climate change’. We used a mixed method approach including topic modelling, which is a digital method that automatedly identifies the top topics using an algorithm to understand how Twitter users engage with discussions on ‘climate change’ and ‘global warming’. The percentage of the top 400 users who use the term ‘climate change’ and believe it is human-made or anthropogenic (82.5%) is much higher than users who use the term ‘global warming’ and believe in human causation (25.5%). Similarly, the percentage of active users who use the term ‘global warming’ were much more likely to believe it is a results of natural cycles (18%) than active users who use the term ‘climate change’ (5%). We also identified and qualitatively analysed the positions of the most active users. Our findings reveal clear politically polarized views, with many politicians cited and trolled in online discussions, and significant differences reflected in terminology.
In this empirical study, we collected about 6.8 million tweets that mentioned “fake news”, and we extracted references to climate change and/or global warming to understand the public discourses around these two issues. Using a mixed method, the study’s findings show that there is a clear politically polarized discussion on climate change. We found that the majority of tweets focus on the United States context though references to other Western coutnries are often made. The anti-Liberal or anti-Democratic online community was more active on Twitter than the anti-conservative or anti-Republican community. Also, more than half the examined most retweeted posts contained claims about climate change being a natural cycle or even denying it exists, while about a third of these tweets stated that climate change was anthropogenic. The implications of the study are discussed, we argue that fake news as a term has a hollow meaning as it is used as a buzzword to discredit opponents and further the political agenda of different parties not only in the United States but also in other Western countries like Australia.
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