By Nick Tattersall
Lagos - Millions of Nigerians may have to flee rising sea levels in the next half century, as ocean surges swamp some of Africa's most expensive real estate and its poorest slums, scientists say.
Nigeria, stretching from the Sahara to the Gulf of Guinea, could come under triple attack from climate change as the desert encroaches on its northern pastures, rainfall erodes farmland in its eastern Niger Delta, and the Atlantic Ocean floods its southern coast.
But the greatest concern is the sprawling commercial capital, Lagos, one of the fastest growing cities in the world, spread over creeks and lagoons and dangerously close to sea level.
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'three million people would be homeless' "Lagos is a megacity with 15 million people, half of them at two metres above sea level, and that puts them at risk as hardly any other big city in the world," Stefan Cramer, Nigeria director of Germany's Heinrich Boll Foundation think tank and an adviser to the Nigerian government on climate change, said.
Speaking at the launch this week of a Nigerian documentary on climate change, Cramer said most scientists predicted sea levels would rise by one metre over the next half century.
"In 50 years with a one-metre sea-level rise, two million, three million people would be homeless ... By the end of the century we would have two metres and by that stage Lagos is gone as we know it," he said.
Lagos state government has been battling to reinforce the long sand spits such as Bar Beach which protect the mouth of the main lagoon from the Atlantic.
But the effect would be limited and little was being done in terms of urban planning to adjust to the risks, Cramer said.
Nigeria's economic growth, fuelled by its huge oil deposits, has been among the fastest in Africa. This has drawn labourers to the factories and docks of Lagos, while white-collar workers flock to its banks and blue-chip firms.
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