14
Apr
2019

The 2018 heatwave may not have been possible without climate change

A hot sun over a city

The northern hemisphere experienced a long heatwave in 2018

Tom Nicholson/Lnp/REX/Shutterstock

By Adam Vaughan

We know climate change made the heatwave that swept the northern hemisphere last year more likely, but is it possible to say that it actually caused it?

In a bold claim, researchers are suggesting the extent of the event would have been impossible without the carbon dioxide humanity has pumped into the atmosphere. Global warming appears to be caught red handed.

From record temperatures in Japan to wildfires in Sweden, many regions were hit by extreme heat between May and July 2018. A 5 million square …

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