One critical element of global urban trends which has received growing attention is informality . Informality is one of the key defining features of cities and settlements in the Global South . In almost all nations in the Global South, more than half the urban workforce work in informal employment; the proportions are particularly high in South Asia  and sub-Saharan Africa  . The term 'informal settlement' refers to
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report