African cities and their ecological impact

No other continent in the world (that’s not counting Antarctica) is studied by less ecologists than Africa; that is actually paradoxal, because cities are growing here faster than any other continent on Earth. Just less than a century ago, 5% of people lived in urban areas, while now, almost 40% call a city their home. This [...]

Cities as seen from space, at night

Recently, the NASA observatory published some great images of some cities. For a man looking at those cities at night, man’s work seems both impressive and insignificant. But the view would be fantastic: regular patterns of irrigated cropland, straight lines of roads and railways running across continents, reservoirs on river systems, and the cement rectangles [...]