Did Amazon blazes cause dark skies in São Paulo? Experts say not quite

São Paulo Amazon fires
Amazon fires or a cold front?

Sitting just south of the Tropic of Capricorn, the winter sun in São Paulo tends to set shortly before 6 pm. However, by around 3.30pm on Monday afternoon, thick black clouds covering the city shrouded São Paulo in abnormal darkness. By 4 pm, the sky was near black, startling residents and provoking wild debates on social media.

On Twitter, “it’s 4 pm” became the number one trending topic around the country, with São Paulo residents posting apocalyptic landscapes of their city, two hours before sunset. Initial reports from mainstream media were lighthearted, with Folha de S.Paulo tweeting that the...

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