Study Reveals Human-Caused Climate Change Responsible for 55 Heat Waves

Tue Oct 21 2025 02:28:14 GMT+0300 (Eastern European Summer Time)

New research highlights the direct link between fossil fuel emissions and increased frequency of heat waves, affirming the catastrophic effects of climate change driven by major polluting companies.

A recent study published in the journal Nature asserts that 55 heat waves over the last 25 years can be directly attributed to human-induced climate change, largely due to emissions from a small number of fossil fuel producers. Out of the 213 heat waves analyzed, 55 were shown to be 10,000 times more likely due to man-made influences, illustrating the significance of carbon emissions from cement, oil, and gas companies in exacerbating global warming and extreme weather events.

Fifty-five heat waves over the past quarter-century would not have happened without human-caused climate change, according to a study published Wednesday.

Planet-warming emissions from 180 major cement, oil and gas producers contributed significantly to all of the heat events considered in the study, published in the journal Nature. The research examined 213 heat waves globally from 2000 to 2023. The examined polluters included both publicly traded and state-owned companies, along with several countries for which fossil fuel production statistics were available.

Collectively, these producers are responsible for 57% of all carbon dioxide emissions from 1850 to 2023.

It just shows that it’s not that many actors ... who are responsible for a very strong fraction of all emissions, said Sonia Seneviratne, a climate professor at ETH Zurich and a contributor to the study.

The EM-DAT International Disaster Database was used to compile the set of heat waves analyzed in this study, highlighting the most widely utilized global disaster repository. The Nature study focused on all heat waves in the database from 2000 to 2023, excluding a few that weren’t suitable for analysis.

Global warming rendered all 213 examined heat waves more likely, with 55 being found to be 10,000 times more probable due to industrialization that began accelerating in the 1800s—practically declaring these heat events virtually impossible without human-caused climate change.

Numerous consequential heat waves have resulted in significant problems, including the 2022 European heat wave that was linked to tens of thousands of deaths.

This study not only informs future climate action strategies but also underlines the accountability of the fossil fuel industry in climate-related legal cases. Legislative measures are already underway in states like Vermont and New York to hold fossil fuel companies responsible for their emissions and the resulting catastrophe.