By moving the slider, the user can compare 1990 false-color Landsat views (left) with recent true-color imagery (right). Humans are increasingly transforming Earth’s surface—through direct activities such as farming, mining, and building, and indirectly by altering its climate.
This interactive feature includes 12 places that have experienced significant change since 1990. This is an user-friendly way to compare remote sensing images over time. Pictured above is the Aral Sea, which is and under-the-radar environmental catastrophe in Central Asia that has its roots in the Soviet era's (mis)management policies.
Tags: remote sensing, land use, environment, geospatial, environment modify, esri, unit 1 Geoprinciples, zbestofzbest.
Via Seth Dixon
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As I sat in class, and Professor Dixon began to tell us about humans changing the world around them I was not surprised, after all I have heard about how we caused global warming by destroying the ozone layer and we cut down trees ect. However what I was not prepared for was the speed with which we reshape the world. In a span of about 20 years we have destroyed entire ecosystems, and it is to late to do anything about it. The Aral Sea is dead, and it would be very difficult to nearly impossible to fix it now.
On top of all that damage, we also learned in class that the area where sea water used to be, but is now land because of the receding water is so salty and baron that it is wasteland and not fit for any type of use. When that water dries up, there will be none left for the nearby countries to utilize.