Kenya, Ethiopia and South Africa will need to spend a total of U$280billion in the next thirty years to fix climate change challenges.

According to a new research study released on Monday, investments of about $280 billion will be needed to cope with the effects of climate change in 35 cities in South Africa, Kenya and Ethiopia by 2050.

The research was conducted by the Coalition for Urban Transitions (CUT), that advises governments on economic development and climate change.

"Africa's urban development is likely to confront unprecedented biophysical risks," the group said.

"Three pillars will be crucial for low-carbon, climate-resilient urban development: compact urban growth, connected infrastructure, and clean technologies."

The group observed that Africa is the fastest urbanizing continent and also the hardest hit by global warming.

Africa's urban population increased 20-fold between 1950 and 2015 to some 567 million people, making "efficient and inclusive urban planning extremely difficult," according to the report.

A further 950 million people are expected to live in African cities by 2050.

Also read: Africa must rid itself from the label of 'continent without climate data'

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