Housing has always been a decisive and sometimes divisive political issue. Home ownership has of course long been an aspiration for many people, and in the post-war period between 1953 and 1971 the number of households renting and owning reached an equal level, as documented in official census statistics for England and Wales. Ownership then surpassed renting, reaching its peak in 2001 at 69%. In the decade that followed, this number went down to 64%. The following two maps show the ownership rate in the UK in a conventional and an equal population projection:
As part of the new Sustainable Development Goal 3 which aims to “ensure healthy lives and promote well-being for all at all ages” the UN concludes, that “the incidence of [HIV] has declined globally since 2000. […] The incidence of HIV was highest in sub-Saharan Africa, with 1.5 new cases per 1,000 uninfected people.” Despite longer term positive trends, a recent UNAIDS report stated that “new HIV infections among adults have stalled, failing to decline for at least five years.” This shows that HIV remains a global challenge that needs continuing prevention efforts and ongoing awareness and education. In 2015 it was estimated that globally 34.0 to 39.8 million people are living with HIV. The following cartogram shows the countries of the world resized according to the adult population (aged 15-49) living with HIV, complemented by two maps showing the corresponding relative percentages:
Iceland and maps have a long tradition in the history of cartography. From the first maps of the country in the 16th century (including works from cartographers such as Ortelius and Mercator, also featuring some nice sea monsters) to today’s advanced digital mappings of Iceland’s diverse natural environment (such as this innovative mapping of water in Iceland or this quite beautiful representation of contour lines), Iceland never really had a lack of quite good cartographic works. Much less covered than the natural environment are the social landscapes of the country, such as this just recently updated version of a gridded population cartogram of the country where each grid cell is proportional to the number of people living in that area:
Renewable energy is defined as ‘energy from a source that is not depleted’. Main sources include biomass, hydropower, wind, biofuels, solar, heat pumps, biogas, geothermal, and marine (such as tidal power). Data by the International Energy Agency sees the share of renewable energy in global power generation at 22 per cent in 2013, with an estimated increase to 26 per cent by 2020 as a result of supportive policies by a large number of governments.
Tropical cyclonic systems are generally referred to as tropical storms. They are better known by their regional names, such as hurricanes in the Caribbean and North America, or typhoons in parts of Asia. They form near the equator over larger bodies of warm waters that evaporate from the ocean surface and fuel these emerging storm systems. Their strong winds and heavy rainfalls frequently become part of our news as they often put large numbers of human livelihoods at risk.
Recent studies show that the number of tropical cyclones (as well as tropical cyclone intensity) over the past decades has increased. Tracks of tropical storms collected over a longer period can indicate where such storms occur most frequently. The records used in this issue’s visualisation covers data from 1945 to 2008.
Alternative ways of presenting the results of the Olympics has become more popular in recent years. Google – as other media outlets – did alternative medal counts allowing you to rank the medals not by their absolute numbers, but by other indicators such as population, GDP, or even more quirky themes such as fans or healthy eating. Continue reading