Yearly Archives: 2011

World Malaria Day

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The term ‘malaria’ comes from the medieval Italian ‘mala aria’ meaning ‘bad air’. The term was coined at a time before the mosquito had been identified as the carrier of the parasite. (Worldmapper)

April 25 is World Malaria Day which raises awareness for a still prevalent disease. While some significant efforts could be made to come closer towards the goal of eradicating Malaria-related deaths until 2015, still an estimated 800,000 people die every year from the disease according to the World Malaria Report 2010. According to UNICEF, Malaria is the third single biggest killer of Children globally, and about 90% of these deaths occur in Africa. One in six of the
In collaboration with UNICEF I have worked on an updated version of the Worldmapper Malaria Death map, using the WHO report and UNICEF figures to visualise the distribution of Malaria-related deaths. The figures were also added to the Guardian Datastore which also has more information about Malaria cases in general and the collection of such data.
The resulting map shows the distribution of recorded deaths that were attributed to Malaria, and it shows the ongoing dominance of Malaria being a lethal problem on the African continent:
World Malaria Death Map
The UNICEF Press Release adds this information: Continue reading →

Walking Dead: Capital Punishment

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Amnesty International has recently released their latest report on executions and sentences around the world during 2010 (pdf) stating that ” it is clear that countries using the death penalty are now increasingly isolated” (see also here, the underlying data has also been added to the Guardian Datastore).
The following two maps show a worldmapper-style view of the state of death penalty using figures from the time of 2007 to 2010 out of the above mentioned sources. There are two pictures that can be drawn from the data: The first map shows the countries of the world resized according to the total death penalty sentences recorded there in that time period (the map inset shows the state of death penalty around the world on a conventional map). The second map visualises the actually executed death penalties from 2007-2010 by resizing the countries accordingly (the map inset here shows a world population cartogram that allows a comparison of the main map with the actual population distribution).
In both maps the figures for China are uncertain and estimated to be in the thousands. China has been set to 1000 in both maps and may thus appear much smaller than it actually is related to this topic.
The two maps with their very distorted shape of the world show how divided the world is in this topic. Very few countries dominate the map while the majority of countries disappear completely. Europe and South America are literally eradicated, and when looking at the actually executed death penalties in the second map, even more countries vanish:

Cartogram / Map of the Death Penalty Prosecutions worldwide 2007-2010
(click for larger map)
Cartogram / Map of the Death Penalty Executions worldwide 2007-2010
(click for larger map)

Continue reading →

In Focus: US midterm elections 2010

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Political InsightA map showing the US midterm elections results is now featured in the “In Focus” section of Political Insight (April 2011, Volume 2, Issue 1). The accompanying article written by Charles Pattie, Danny Dorling and me looks at the implications of the election results.

Here are the bibliographic details:
US Midterm Elections 2010 Thumbnail image

  • Pattie, C. Hennig, B. D. and Dorling, D. (2011). In Focus: US Midterm Elections 2010. Political Insight2 (1): 34.
    Article online (Wiley)

More electoral maps can be found here.

The content on this page has been created by Benjamin Hennig. Please contact me for further details on the terms of use.

Counting the US population

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Around the world countries are counting their people in the national censuses. The world’s largest country China aims to chart its shifting population, so does the second largest nation India (who also just released their latest tiger census results), Germany takes a deeper look into its shrinking population for the first time since 1987, while the United Kingdom looks at its still growing population. These are just some of the example for the currently ongoing latest rounds of censuses around the world which will also lead to significant updates of global socioeconomic data which has been used for the realisation of the worldmapper project.
The USA is one of the first countries to have completed their latest 2010 census and recently started publishing the figures from last year’s population count. Among the first numbers released are the population counts, which draw the most up-to-date picture of the US population distribution and does also allow to analyse the changes since the last census took place in 2000. The following map uses these figures and shows the US population in cartogram form based on the state level figures. The main map shows each state resized according to the total number of people living there, and colours the states by their relative change (in percent) compared to the 2000 population. The upper left map inset shows the same map, colouring the states by their total population changes in that 10 year period. The bottom right map inset resizes the states according to the total population changes that took place between 2000 and 2010, and colours the relative change on top of that:

Population Map / Cartogram the USA
(click for larger map)

Continue reading →

Megacities and Earthquake Risk

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Read more about this map:
Paper in the Journal of Maps: Gridded cartograms as a method for visualising earthquake risk at the global scale

The following map is a modified version of the earthquake vulnerability map published on this website last month (see that page for more details on the underlying earthquake map). The map itself does not show much new information, but includes an aditional layer containing the largest cities of the world, the so-called megacities (depending on the definition, these are cities with a population of more than 5, 8 or 10 million). The circles reflect the category in which each city belongs (based on 2015 estimations by the UN), and they are placed on the location of the city related to the total population distribution. As the map is resized according to the population (equal-population projection), the map also help to understand the setting of each city within the global population density, explaining why the artificial boundaries of a city do not always tell the full story of the urban population structure within a region. In some areas, such as Hong Kong and Guangzhou in the Pearl River Delta, cities are just one of several centres in a highly urbanised region – an urban sprawl – while other megacities like Mexico City or Moscow are in a more solitary location (although even here the extent of the populated area goes beyond the urban boundaries, and certainly the population is far from solitude). Without the city labels the map already showed the relation between human settlements and earthquake risk. The following map now allows to better understand the underlying geography if one is not so familiar with that kind of map transformation.
On a more technical note, the following map feature also includes another jQuery feature (I experimented with the image slider applied to maps on the earth at night map): This map uses the Zoomy Plugin to reveal a more detailed version of the map using an interactive magnifier. Click on the map map to enable the magnifier and see more detail (or if you don’t like that, click here for the usual large version of the map).

Continue reading →

Views of the World at Night

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The Sendai earthquake in Japan sparked a debate about sustainable energy supplies of industrialised countries – with a controversial discussion about the safety and sustainability of nuclear power. The book ‘Sustainable Energy – without the hot air‘ by David MacKay is an outstanding read in this regard, outlining the all key issues that matter for our future energy need (the digital version is free, although I recommend the paperback which can even be read without wasting any electricity).
Switching the lights off was not a matter of choice for many people in the North of Japan after the devastations of the earthquake also affected the energy supplies (not only because of the Fukushima accident, but also because of a widely destroyed basic infrastructure). Another image featured in the NASA Earth Observatory takes a closer look at the electricity losses that occurred after the Earthquake by creating a composite image of two images of lights observed in 2010 and after the earthquake at March, 12 this year. As a highly industrialised country, the illuminated areas in Japan usually show the places where people live (see worldmap below), while dark areas are the unpopulated regions, hence the reprojection on a gridded population cartogram results in a dominantly bright image. Using NASAs display of the electricity losses therefore gives a good representation of the number of people affected by the power losses (and largely also the Tsunami and Earthquake itself) in the Northeast: The redrawn version of the image shows these as the red areas, while the brighter yellow areas in the South and West show the regions that has a similar illumination compared to the previous image. This is how ‘Japan at Night’ looked after the 2011 Earthquake:
Japan at Night after the 2011 Earthquake displayed on an Equal Population Cartogram Continue reading →