Johannesburg is home to one of the world’s largest urban forests, but it's come under threat from a tiny beetle.
About 200 species of trees - many of them indigenous to South Africa - are afflicted with the pest and the fungus it carries.
As scientists desperately look for a solution, many of the city’s trees are dying and experts are concerned the infestation could move from the forest to croplands next.
Al Jazeera’s Fahmida Miller reports from Johannesburg.
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