CAAD Data Monitor Vol.2: Wildfire Misinformation
Last Sunday (16 July), scorching temperatures swept across three continents, unveiling the frightening consequences of the ongoing climate crisis. As wildfires blazed and threatened to shatter previous temperature records, Asia, Europe, and the United States found themselves confronting the haunting reality of unprecedented heatwaves. In Greece, the situation took a distressing turn as over a thousand children had to be evacuated from a summer camp in the face of raging wildfires.
Meanwhile, the situation in Italy intensified as the nation braced itself for what could be its highest-ever temperature today (18 July). The European Space Agency forecasted that the islands of Sardinia and Sicily might experience a staggering 48 degrees Celsius, painting a grim picture of the extreme heat gripping the region.
It is against this backdrop of environmental turmoil and escalating wildfires that CAAD publishes its second edition of Data Monitor, a new newsletter that reports on disinformation trends relating to the climate crisis. By delving into the top narratives propagated by opposition actors and studying the evolution of misinformation since the devastating Australian wildfires of 2019, CAAD aims to shed light on the pressing challenges at hand. Moreover, the issue outlines strategies and tactics to combat and address the problem of disinformation surrounding wildfires.
Whenever wildfires burn, the smoke clouds of misinformation rise. Some examples are hard to forget, like US Congresswoman Marjorie Taylor Greene’s 2018 claims involving space lasers and the Rothschilds. But the problem goes beyond such outlandish conspiracies. In recent weeks, a former Canadian foreign minister suggested the fires were a publicity stunt by “green terrorists,” while the Premier of the Province of Alberta focused her crisis response on arson investigations while drawing criticism for avoiding questions on the impacts of climate change.
The Long Tail of Wildfire Misinformation

Original posts on Twitter containing keywords related to wildfires, bushfires or forest fires in conjunction with arson or eco-terrorism between 1 December 2019 and 18 June 2023
Social media is central to the spread of mis or disinformation which can include fake arson claims during wildfire events. Having reviewed historic data across platforms, three main episodes stood out:
Australian bushfires (December 2019-January 2020);
Wildfires on the US West Coast (August-September 2020); and Recent Canadian wildfires (May-June 2023).
To gain deeper insight into these incidents we used topic modelling – a computational technique to detect patterns of speech in large datasets – and included data across four social media platforms (Twitter, Facebook, YouTube and Reddit). Findings below cover a ‘top layer’ of analysis that reflects broad trends but cannot serve to quantify scale. Our analysis highlights which patterns of speech, referred to as ‘topics,’ the model identified across all three of these events, and which seem to be specific to one case. For those interested, a fuller explanation of the methodology is available here.
Lines of Attacks
1. “It’s arsonists, not climate change”

While human activity can play a significant role in starting wildfires, a singular focus on arson as the sole cause is misleading and obscures the role of, for example, carelessness or lightning strikes. More importantly, it obscures the fact that dry and hot conditions, which are becoming more likely with climate change, are a key factor in whether human action or weather events lead to major wildfires. For an overview of the core science, we recommend this explainer from The Narwhal.

2. “It’s politics not climate change”
A second group of posts blame arsonists for the wildfires but goes further in ascribing explicit political motives which differ by event. In Australia (2019) we only identified one ‘topic’ that overtly linked “greens” or “greenies” to the wildfires, with a few posts referring to eco-terrorism, but these arguments had spiralled in popularity by the US (2020) and Canadian (2023) cases.
Posts around the US blamed the Black Lives Matter movement and Antifa activists, reflecting localised culture wars, while for Canada we found allegations linking eco-terrorist activity to Prime Minister Trudeau and Environmental Minister Guilbeault.

3. “It’s incompetence, not climate change”
Forest management was also a theme identified across all three wildfire episodes, and another effort to dismiss the effect of climate change on wildfires. The targets of content were generally environmentalists and politicians, who were blamed for preventing crucial forest management measures and, in turn, increasing the alleged impact of arson.
The Evolution of Wildfire Misinformation Phase 1: Australia (2019-2020)
Phase 1: Australia (2019-2020)
For Australia, we found a disproportionately higher number of posts focused on clarifications by law enforcement, debunks of false arson claims and coverage about misinformation itself. While these topics were present in the other two incidents (US, Canada), they became substantially less visible.

Among the ‘topics’ referencing mis-/disinformation in 2019 there were more specific ones focused on allegations against outlets in Murdoch’s News Corp empire for spreading false and misleading claims. This may have brought the issue of mis-/disinformation to the fore of public discourse, explaining the disproportionate attention to this issue in the Australian episode.
Phase 2: The US (2020)
Around the US wildfires, calls to punish arsonists emerged as a more distinct theme, although during all three wildfire episodes we identified ‘topics’ specifically discussing the death penalty for arsonists. The US case stood out, however, for content that called for arsonists to be shot on sight. The prominence of such topics is difficult to quantify but highlights the potential for arson claims to mobilise vigilantism and wider violence.
Phase 3: Canada (2023)
The latest wildfires mark a shift online, with conspiracy theories rising to the surface as a more explicit lens employed to frame the cause of such events. While such content had circulated during previous events, discourse is now more overtly anchored in theories citing the World Economic Forum (WEF), the Great Reset and 15-Minute Cities.

Our team saw examples of content across platforms which implied that wildfires are set intentionally, with the aim to scare people into supporting climate action. This overlaps with the ‘political motive’ claims discussed above, but is explicitly linked to climate change being a hoax and/or a pretext for ’elites’ to exert control.
Posts falsely allege that wildfires were set to depopulate rural areas and force relocation into tightly surveilled cities – as covered in the last edition of Data Monitor, these urban spaces are often depicted as ‘open- air prisons’ subject to Big State tyranny.
Wildfires in Australia and the US mostly predated the emergence of ‘lockdown’ conspiracy theories during COVID-19, which are now rife across social as well as traditional print and broadcast media. The discourse surrounding Canada shows how such thinking has been normalised and can impact a variety of policy areas / issue sets, from urban planning to extreme weather response.
Note: In datasets around the US and Canada, arson claims from prior wildfires were commonly referenced. This took two forms: some content pointed to alleged incidents (e.g. in Australia) to imply a consistent, transnational trend and discredit climate science; other content cited previous mis- and disinformation in an effort to debunk recurring claims. This suggests that false and misleading arguments around wildfires are ‘sticky’ – they continue to shape discussions online – even when extensive reporting, fact-checks and public statements exist to counter them.
How to fight back
Exaggerated claims about arson are likely to reappear in the future – communicators should already ‘pre-bunk’ misinformation with persistent facts and explainers for the general public. Try to use accessible language and focus less on the scientific nuance than key messages (i.e. climate change produces/worsens x impact, which leads to y outcome) – simple, repeatable stats and headlines.
It is crucial to invest in public education before crises hit, as sharing information about climate change during extreme hot weather can be less effective. Do not be afraid to acknowledge arson’s contribution to wildfires, where relevant and backed up by data – it’s not zero, but numbers are prone to manipulation, e.g. by conflating arson with accidents or carelessness.
When you encounter bad faith attacks, a human-centred response may work better than merely debunking. For example, pointing out how misinformation endangers citizens and service workers (including frontline responders) could resonate more than a direct rebuttal explaining the science. Much like conspiracy theories, accusations of arson offer an intuitive ‘explanation’ for crises that feel serious and beyond people’s control. It is perhaps more comfortable to imagine there are clear perpetrators than accept the larger factors at play. Be sensitive to those fears and, where possible, proactive in suggesting how people can prepare for, mitigate and/or educate others about wildfire events.
Link to tables showing the five most widely shared posts captured by the keywords on Twitter for each of the three events can be accessed here