Deadly heat in Mexico and US made 35 times more likely by global heating

Researchers find extreme heat four times more likely than at turn of millennium and urge reduction in fossil fuels

The deadly heatwave that scorched large swaths of Mexico, Central America and the southern US in recent weeks was made 35 times more likely due to human-induced global heating, according to research by leading climate scientists from World Weather Attribution (WWA).

Tens of millions of people have endured dangerous day – and nighttime temperatures as a heat dome engulfed Mexico – a large and lingering zone of high pressure that stretched north to Texas, Arizona and Nevada, and south over Belize, Honduras, Guatemala, and El Salvador.