Fossil Fuel Producers Linked to Rise in Heatwaves, Study Finds

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September 13, 2025

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Key Players and Their Impact on Climate Change

A recent study published in Nature has revealed a strong correlation between the fossil fuel and cement industries and the increased frequency and intensity of heatwaves over the past two decades. The research, conducted by an international team of scientists, analyzed 213 heatwaves worldwide from 2000 to 2023, focusing on the role of the 180 largest fossil fuel and cement producers.

Human-Induced Climate Change and Heatwaves

According to Yann Quilcaille, the lead author from the Swiss Federal Institute of Technology in Zurich, “the study demonstrates that human-induced climate change has made more than 200 heatwaves more intense and likely, with this influence growing over time.”

  • Human-induced climate change has not only increased the likelihood of heatwaves but has also multiplied their probability by at least 10,000 in a quarter of the cases (55 out of 213).
  • The intensity of heatwaves has increased significantly over time, with them being 20 times more likely between 2000 and 2009, and 200 times more likely between 2010 and 2019.

The Role of Major Corporations in Climate Change

The researchers aimed to understand the part played by the 180 largest fossil fuel and cement producers in this trend. They considered both the companies’ value chains and their customers’ use of the products they sell.

Emissions and Heatwave Intensity

The study found that emissions from these large corporations have contributed to a 50% increase in heatwave intensity compared to the pre-industrial era. Moreover, these emissions have also increased the likelihood of heatwaves.

Influence of Major Companies

The 14 largest companies, including Saudi Aramco, Gazprom, Chevron, and BP, have a significant impact, as their contribution is equivalent to that of the other 166 companies studied. Their role in exacerbating climate change is not insignificant.

Legal Implications and Future Research

The study’s findings could strengthen the role of attribution science in legal proceedings, as litigation related to climate change is on the rise. Quilcaille stated, “While our study has a scientific objective, we are aware of its potential to shed light on these cases.”

Key Questions and Answers

  • What is the main finding of the study? The research demonstrates a strong link between human-induced climate change and the increased frequency and intensity of heatwaves, with fossil fuel and cement industries playing a significant role.
  • How did climate change impact heatwaves? Climate change made heatwaves more likely and intensified them, with their probability multiplying by at least 10,000 in a quarter of the cases.
  • What role did major corporations play in this trend? The 180 largest fossil fuel and cement producers, including the 14 biggest companies, have significantly contributed to increased heatwave intensity and likelihood through their emissions.
  • What are the legal implications of this study? The findings could strengthen attribution science in legal proceedings, as litigation related to climate change is increasing.