[Ecoed] mapping human impacts

[Michael Leigh]

I teach environmental science, and am looking for a series of world maps to impress upon my students the extent of direct human impacts on this planet.  It could be a computer program or maps, or a video.  
   
  Ideally, it would have "layers" that could be viewed separately or "cumulatively", such as:  areas of current human habitation; areas of past human habitation; roads; areas currently used for agriculture; areas cleared for agriculture in the historic past; areas cleared by timber harvesting; etc.  I'm not interested in trying to illustrate indirect human impacts, given that such a map would just highlight the entire planet-- just direct impacts.
   
  So far, I haven't seen anything like this.  However, I imagine that this sort of graphics could powerfully illustrate how extensive an impact our 1 species has had, and how important it is for us to confront this issue.
   
  Any suggestions?

       
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