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.