Climate change will deliver serious blows to all parts of the world, but not all regions face the same threats, according to Monday's report by the Intergovernmental Panel on Climate Change (IPCC). Nigeria's coastal capital, Lagos, will be the world's most populous city in 2100. "High heat exposure combined with the urbanisation process we are seeing right now in Africa... is a dangerous mix," said IPCC lead author, SMU Associate Professor of Science, Technology and Society Winston Chow.