Now that satellite imagary has been around for a while, we can start to track how th esurface of our planet has changed over time: since about 1984 to be exact.
This article in Time online shows timelapse video footage taken from Google Earth as well as a couple of examples which you can explore in Google Earth. They include urban development in Dubai, rainforest deforestation in the Amazon and rapidly retreating glaciers in Canada.
Technology can be a wonderful thing ...
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