Today's Fun With Maps: Where the People Are, and the Trees

Two powerful and fascinating interactive tools
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Synthetic Population map of the Los Angeles basin, showing race of each household. Red dots are for white households; turquoise for black; purple for Asian, etc as explained at their site.

As John Tierney mentioned recently, and as Google's Michael Jones explained in an Atlantic interview last year ago, maps are both the most rapidly evolving and often the most useful ways to make sense of changes around us.

Two illustrations for the day.  First, from a group called RTI, the "Synthetic Population Viewer," developed from Census data and originally intended to study disease and epidemiology patterns. That's a screen shot of one aspect of its map, above: it's greater Los Angeles, with differently colored dots representing the race of each household, against a black background. Below is how the Greenville-Greer-Spartanburg area looks, with a map background and a closer-in view. In both cases the red dots representing white households, turquoise representing black households, and others you can see online for other groupings :

Here's the comparable view of Washington DC and environs, which conveys one of the demographic realities of the area:

The maps can also show households differentiated by income, age, and household size -- or all four at once, in the "quad view." Among the interesting things about this approach (as Emily Badger described for Atlantic Cities last fall) is that each dot represents an individual household -- not a real, identifiable one but a "synthesized" but representative one derived from the data. You can read the background here and here and explore the map on your own here. It is much more configurable and open-ended than any screen shots can convey; I found it really fascinating.

Now, trees: Global Forest Watch, in collaboration with a large number of other organizations and companies, has an also fascinating and also fully interactive map online. It shows changes in forest cover, forest use, levels of protection for forests, and other variables around the world. Here is the complex interaction of forest expansion (blue dots) and forest reduction (pink) in the southeastern United Stattes:

Plus good news from Chile and parts of southern Brazil and Uruguay, and bad news from much of Amazonia, here:

Our American Futures partners at Esri are heavily involved in this project; you can read their description of it here

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James Fallows is a national correspondent for The Atlantic and has written for the magazine since the late 1970s. He has reported extensively from outside the United States and once worked as President Carter's chief speechwriter. His latest book is China Airborne. More

James Fallows is based in Washington as a national correspondent for The Atlantic. He has worked for the magazine for nearly 30 years and in that time has also lived in Seattle, Berkeley, Austin, Tokyo, Kuala Lumpur, Shanghai, and Beijing. He was raised in Redlands, California, received his undergraduate degree in American history and literature from Harvard, and received a graduate degree in economics from Oxford as a Rhodes scholar. In addition to working for The Atlantic, he has spent two years as chief White House speechwriter for Jimmy Carter, two years as the editor of US News & World Report, and six months as a program designer at Microsoft. He is an instrument-rated private pilot. He is also now the chair in U.S. media at the U.S. Studies Centre at the University of Sydney, in Australia.

Fallows has been a finalist for the National Magazine Award five times and has won once; he has also won the American Book Award for nonfiction and a N.Y. Emmy award for the documentary series Doing Business in China. He was the founding chairman of the New America Foundation. His recent books Blind Into Baghdad (2006) and Postcards From Tomorrow Square (2009) are based on his writings for The Atlantic. His latest book is China Airborne. He is married to Deborah Fallows, author of the recent book Dreaming in Chinese. They have two married sons.

Fallows welcomes and frequently quotes from reader mail sent via the "Email" button below. Unless you specify otherwise, we consider any incoming mail available for possible quotation -- but not with the sender's real name unless you explicitly state that it may be used. If you are wondering why Fallows does not use a "Comments" field below his posts, please see previous explanations here and here.
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