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Hans Rosling on population growth and other, related things.

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Randall Munroe, over at xkcd, does some really funny cartoons, and is a physicist by training. Every week he answers a hypothetical question: this week it’s How much of the Earth’s currently-existing water has ever been turned into a soft drink at some point in its history? His answer, by the way, is “not much”. […] Read more


A few days ago I noted the difficulty of thinking in terms of dependency ratios: being economically active is a continuum, rather than black or white. There’s another side to the story, too. An aging population can provide opportunity, not only by producing products that appeal directly to a growing segment of the population, but […] Read more


Frances Coppola makes some interesting points about dependency ratios, sparked by this article from The Economist. We often see charts showing the proportion of the population aged over 65 compared to those between 16 and 64, based on the assumption that the former aren’t working and the latter are. The trouble is, as Frances points […] Read more