Human Impact

http://www.nationalgeographic.com/earthpulse/human-impact.html

http://ic.galegroup.com/ic/ovic/ViewpointsDetailsPage/ViewpointsDetailsWindow?failOverType=&query=&prodId=OVIC&windowstate=normal&contentModules=&display-query=&mode=view&displayGroupName=Viewpoints&limiter=&currPage=&disableHighlighting=false&displayGroups=&sortBy=&search_within_results=&p=OVIC&action=e&catId=&activityType=&scanId=&documentId=GALE%7CEJ3010598222&source=Bookmark&u=nysl_me_bpl_cent&jsid=4520ea8e45b22d54e809f6c43b9117bb


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