Maps

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Working on this week's lab for Maps and the Geospatial Revolution.

Have a look at this cool tool available from ESRI -- you can see change-over-time at locations all over the world.  Here are natural-color maps of Overland Park, Kansas, from 1990 and 2010, and a composite of vegetation change (infrared) between 1990 and 2010.

One thing I wonder about is if those images were taken at the same time of year.  The level of dryness/vegetation would vary noticeably at different times of year, and one year may be wetter/dryer than another, too, regardless of the passage of decades.....

But the change in human activity on the land is huge and unmistakeable, time of year aside.

If you type in the "location" box, you can see other locations............

Isn't it cool that any random person can see this stuff?

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