Major polluters have contributed significantly to the frequency and severity of devastating heat waves over the last two decades, a new study reveals.

The paper, published in Nature , found emissions from 180 fossil fuel and cement companies made 213 major heat waves, including BC’s deadly 2021 heatdome, more intense and likely to occur.

Researchers at ETH Zurich university analyzed emissions from 180 of the world’s largest fossil fuel and cement companies to calculate their contribution to global warming. Collectively, the companies accounted for 60 per cent of humanity's total cumulative CO2 emissions from 1850 to 2023, the paper found.

Once researchers had the numbers, they calculated how much each company contributed to global warming, and from there, determined how this warmin

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