Karl Marx was born in Trier 200 years ago today. The legacy of the political economist is fiercely contested. The Ecologist was among the first magazines to examine his ecological thinking - in an essay published in 1971. Here, GARETH DALE, an editor of the book Green Growth, examines Marx's own claims about nature and society - and our original interpretation of them
To blame our social and environmental problems on a population explosion in the developing world is to ignore the real bottom line, says Asoka Bandarage