population growth

What works

This video does an excellent job of explaining how population growth has happened with beautiful visualizations. Click through to watch it. It’s worth it.

What comes next

It would be nice to have a visualization that could combine population growth visualizations with quality of life visualizations. Quality of life was pretty dismal in the beginning – infant mortality was high, maternal death was high, life times were short and much more of them were spent in grueling conditions. The rising tide of domestic agricultural practices raised all boats. But then quality of life started to become stratified – some people in some places had it pretty good while others were still facing not such great conditions. Now quality of life is extremely stratified but starting to diminish globally and will continue to diminish as the impacts of climate change set in (not to mention the non-climate related concerns associated with what happens when the planet starts to reach its limit in terms of how many human lives it can support at high levels of ‘quality of life’). Fewer people will be able to eat meat regularly (which may or may not be considered an indicator of high quality of life), more people will get asthma as we all move to cities congested with the exhaust of internal combustion engines and coal-fueled power plants, more people will live in drought stricken places, and more people will end up in conditions of poverty if rates of inequality continue as they are.

The video is beautiful as it is. But the beautiful polish helps obscure the notion that population growth is not necessarily a good thing.

References

Cole, Adam and Starbard, Maggie. (31 October 2011) Visualizing how a population grows to 7 billion. NPR.org.

Note

My dad sent this along to me and I decided to leave his handwritten note at the top. Since he was interested in the graphic and not the article, I do not know exactly which article in the March 2011 issue of National Geographic contained the Human Impact graph, but my educated guess suggests it came from the one entitled, “The Age of Man” by Elizabeth Kolbert. I checked out the online version and could not find this graphic, but print and online versions of magazines do not always contain the same content.

This is why it’s nice to have parents who will cut things out of print magazines for me. Thanks, dad.

What works

The best feature of this graphic is that it provides a way for readers to understand population growth taking into consideration the qualities of the population – and the way that changes in those qualities over time mean that population growth at one point in time is not the same as population growth at a different point in time. As we all get richer, we demand more of the planet in terms of food (increased affluence leads to eating higher up the food chain which is less ecologically efficient), in terms of energy (more affluence means more demands for electricity and fossil fuels), and all of our affluence allows us to spend more time inventing things that will make our lives even better than they already are. The increase in affluence as measured by global GDP and the increase in technological sophistication as measured by patent applications are going to go hand in hand. I would point out that patent applications would not be necessary in economic systems other than capitalism, so that particular metric might be off in countries that aren’t wholly capitalist (Cuba comes to mind).

What needs work

What’s weird about this to me is that this growth is exponential and yet it has been represented linearly. I’m wondering what an exponentially growing volume looks like – probably looks pretty interesting depending on how the parameters constraining the volume are keyed to the variables. This is a tough criticism because I don’t even know the answer myself, I just know that something isn’t quite right with the tidy right angles here.

I’m a bit upset, too, about the fact that we’ve run into the apples and oranges problem again. One unit on any of these axes cannot be compared to one unit on the other two – a patent application is not like a human and neither of these are like dollars of GDP. Because I cannot compare one axis to the next, I know that I cannot use this graphic to form anything other than an impression about the factors comprising the impact of humans being born today. I cannot, say, decide that cutting back on technological growth would be better or worse for the planet than limiting population growth.

There is something good to be said about graphics that represent concepts rather than data. Impressions are not worthless so if this thing gives viewers the impression that population growth is not a problem on its own, but only a problem in the context of the way humans live, that is an accomplishment of which to be proud.

References

Tomanio, John and Bryan Christie. (March 2011) “Why is our impact growing?” [Graphic] in National Geographic p. 72.

Kolbert, Elizabeth. (2011) Age of Man National Geographic Magazine.