Under the spreading chestnut trees

Chestnuts roasting on an open fire” has become a popular notion of Christmas ever since Tormé and Wells wrote their Christmas Song, made famous by Nat King Cole‘s recording in 1946. The chestnut has seen a decline in use over the centuries in Europe, having been brand-marked as ‘food for poor people’. But almost all across the continent (likewise in North America) it now also sees a revival in popularity in Winter time, especially around Christmas. Global chestnut production has constantly been rising, growing from almost 650,000 tons in 1993 to over 2 million tons in 2013 according to FAOSTAT figures. And while the chestnuts roasting on an open fire have their origin in the United States, chestnuts consumed there have often traveled a long way. Although growing conditions are ideal, the USA have no significant chestnut industry and account for less than 1% of the global chestnut production. This is different in Europe where commercial chestnut farming takes place in the Mediterranean, which, however, is challenged by the now top chestnut producer China. China now produced almost 85% of the world’s chestnuts.
The following gridded cartogram is a visualisation of the areas in the world where chestnuts are grown. Using data produced by EarthStat the map shows each grid cell resized according to the total amount of chestnuts produced in that area:

Map of World Chestnut Production
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World Religions

Religion as something “eminently social” as described by Durkheim finds its expression in the distribution of the major religious groups in the world. These have distinct geographical patterns to them, showing the regional influences that each of the groups define, as well as the spread of these influences in the course of history which have significantly changed over the past centuries.
Today, the three largest religions as well as the group of the non-religious put together make up 5.8 billion people, accounting for almost 80% of the world’s population. This highlights their importance in understanding some of the world’s social, cultural as well as political realities that define how people live together within countries but also between borders. As much as religion can unite and reconcile, it can equally be the cause of conflict and violence.
Conflict and peace are both elements that are replicated in the diverse religious shapes that emerge in the cartogram series of these four largest religious groups as assembled in the World Religion Database (adjusted to today’s populations).

Mapping World Religions: Christianity, Islam, Hinduism
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Mediterranean Refugees

geoviews on InstagramWhile preparing a guest lecture at the University of the Aegean on the Greek island of Lesbos I looked for the most recent data about arrivals of refugees via the Mediterranean Sea. UNHCR states that in 2015 almost 900,000 people have arrived in Europe by sea which is higher than the total arrivals counted between 2006 and 2014. 3,500 people are reported dead or missing, which only shows the mere numbers behind the many personal tragedies happening in the Mediterranean. Not only the numbers went up considerably, but also the geographic patterns changed. While Italy used to be the hot spot of arrivals, this has now shifted to Greece where over 750,000 people arrived. Most of these arrivals come from Turkey, making the island of Lebos near the Turkish coast the first destination for the majority of people seeking refuge in the European Union. The following map shows the European countries resized according to the total number of Mediterranean sea arrivals in 2015:

Mediterranean Sea Arrivals of Refugees in Europe 2015
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In Focus: Europe’s uneven development

Political InsightThe British debate about the United Kingdom’s membership in the European Union comes at a time in which the economic woes of the continent have not fully overcome yet. In an article for the “In Focus” section of Political Insight (December 2015, Volume 6, Issue 3) Dimitris Ballas, Danny Dorling and I looked at the changing regional economic geography of Europe.
Europe is in an economic crisis – but the crisis is felt in very different ways in different places. Official unemployment rates are high, especially in the south of Europe, but joblessness is very low in places, such as Germany

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Ecological Footprints


COP21 Paris Logo“There is no planet B”. This slogan has become widely mentioned recently in relation to COP21, the United Nations conference on climate change in Paris. The slogan highlights that the debate about climate change relates to much more than simply a changing climate. The underlying processes have a lot to do with our lifestyles and the related patterns of consumption and waste which cause severe damages to the environment (including the global climate). Carbon emissions are therefore one major trigger of climate change, but are also an effect of our unsustainable ways of life. The ecological footprint shown in the following map is a measure that looks at the impact that humanity has on our planet:

The Ecological Footprint Map of the World: A gridded cartogram projection
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Warped worlds

W wie WissenIn 2013 German public broadcaster ARD made a documentary film about my work for their science programme W wie Wissen. This also features a range of cartogram visualisations that I produced for them. The following clip shows a compilation of the map animations that were shown in the feature, giving an impression of some of the cartographic works and visualisations that I have been working on over the past couple of years: Continue reading