Last of the Wild
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For which part of the earth's land surface is the human footprint data available?
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Since the footprint data uses the spheroid GRS1980, can I just define it as NAD1983? I know that NAD1983 uses GRS1980, but I am not sure if I can define this layer as datum-based instead of spheroid-based.
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What is the Human Footprint Index?
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What is the Human Influence Index?
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What is the Last of the Wild?
