See Massive Human Impact on Our Earth

Check out this Google time-lapse high resolution map of the globe.  It shows the massive recent impacts of human activity on every part of the Earth.  Note that Marin County has remained relatively unscathed, at least visibly.  You can grab the map and drag it to the location you want to focus in on, like a logged forest or urbanized sprawl, you can stop the image in the bottom left hand corner of the screen, then you can grab the slider and move it at your own pace to the year you want to view and slide it forward in time or backward.

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