Hateful tweets multiply in extreme temperatures, US analysis finds

Scientists logged rises of up to 22% in racist and misogynist tweets when temperatures rose above 42C

Hateful tweets multiply dramatically as temperatures become more extreme, an analysis of 4bn geo-located tweets in the US has found.

Scientists logged rises of up to 22% in racist, misogynist and homophobic tweets when temperatures rose above 42C, and increases of up to 12% when the mercury fell below -3C, according to a study by The Lancet Planetary Health.