Jembaton Besi is a slum in Jakarta about 4km northwest of the city centre.
With a population of 4000, Jembatan Besi is one of Jakarta's most densely populated districts.
The reason why people live in slums like Jembatan Besi is that demand for affordable housing greatly exceeds the supply. Neither the government nor the private sector has the resources to cope with the increasing numbers of people wanting to live in Jakarta.
The average income of residents is about $4 a day.
Jakarta has a significant garment industry and there are many small-scale producers operating in and around the slum areas. There is little protection for those employed in these small factories and few health and safety precautions.
Epidemics of water-borne diseases such as typhoid or cholera are common.
The tropical hot and humid climate means that malaria is an issue.
The very young and elderly are at risk from dehydration due to diarrhoea caused by poor sanitation.
Air pollution is at very high levels. The use of kerosene for cooking as well as high levels of emissions drifting over the city pose significant health risks for residents.
Northwood is a community in the northern part of the City of Irvine in California.
What is the population of Northwood?
22,000
1/3 of households are families with children of school age. This stresses the appeal for many to access the good education in the area.
The median household income in Northwood is $86,000 compared to the national average of $52,000.
The University of California, Irvine is the city's largest employer and offers a range of opportunities.
Blizzard Entertainment is a gaming industry start-up from Northwood.
Several TNCs also have their US headquarters in Northwood including Kia Motors and Mazda.
The healthcare in Northwood has some of the best hospitals within the US.
The schools in Irvine are some of the best achieving in the USA.
The educational standards of the residents is high, many have first degrees (68% of residents aged 25+) with 20% possessing a masters or a doctors.
The overall crime rate in Northwood is 70% lower than the national average.