World's biggest city database shines light on our increasingly urbanized planet

ScienceDaily | 2/13/2018 | Staff
Mkgirlz (Posted by) Level 3
With data derived from the JRC's Global Human Settlement Layer (GHSL), researchers have discovered that the world has become even more urbanised than previously thought.

Populations in urban areas doubled in Africa and grew by 1.1 billion in Asia between 1990 and 2015.

Cities - Population - Cities - People - 'megacities

Globally, more than 400 cities have a population between 1 and 5 million. More than 40 cities have 5 to 10 million people, and there are 32 'megacities' with above 10 million inhabitants.

There are some promising signs for the environment: Cities became 25% greener between 2000 and 2015. And although air pollution in urban centres was increasing from 1990, between 2000 and 2015 the trend was reversed.

Density - Area - Inhabitants - City - Database

With every high density area of at least 50,000 inhabitants covered, the city centres database shows growth in population and built-up areas over the past 40 years. Environmental factors tracked include:

Disaster risk-related exposure of population and buildings in low lying areas and on steep slopes.

Data - Access - Everyone - Data - Analytics

The data is free to access and open to everyone. It applies big data analytics and a global, people-based definition of cities, providing support to monitor global urbanisation and the 2030 Sustainable Development Agenda.

(Excerpt) Read more at: ScienceDaily
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