Megacity
A city with over 10 million inhabitants
Urbanisation
The process by which more of the population live in towns and cities instead of rural areas.
Squatter settlements
An illegal settlement in which the residents have no legal rights.
Shanty town
Another name for squatter settlements
Favelas
Brazilian squatter settlements
City of the dead, Cairo
A squatter settlement
Rocinha, Rio de Janeiro
A squatter settlement
Dharavi, Mumbai
A squatter settlement
Brown Agenda
The range of envioronmental problems associated with large cities
Desalination
The process of removing salt from seawater so that it can be used for human consumption or for irrigation.