The ubiquitous satellite imagery now available from Google provides a powerful tool for perceiving change on the earth’s surface. UNEP launched its Atlas of Our Changing Environment last year which
depicts and describes humanity’s past and present impact on the environment. The primary focus is on environmental status and trends over the last 30 years, in terms of both physical and human geography.
Some of the imagery there is stunning and heartbreaking. Here are a couple of examples:
Someone from my watershed group sent out a link to this site with 1949 aerial photos of Atlanta and I located the site where our house was built a year later:
I also did a Google Earth clip of approximately the same area from a more recent aerial photo:
Pretty significant change in development, eh? But not surprising for the metro Atlanta area.