Are there any natural landscapes left?

When the prevalent dualism of nature vs. society is applied to landscapes, it creates another dualism - landscapes are divided into natural landscapes or man-made landscapes (aka anthropogenic, human, social ... landscapes). Then building on this often-unquestioned dualism of landscapes, many of our environmental movements have an explicit focus on preventing the 'natural' landscapes from being influenced by society/humans, and thus becoming 'man-made' landscapes.

Examples of this type of environmental organisation include the Wilderness Society, the Sierra Club or the Natural Resources Defense Council, all of whom call for the protection of 'wild places' or 'wilderness' - our 'natural' landscapes.

While I would tend to reject these categories based on the nature/society dualism, it is clear that of the variety of landscapes on earth today, the level of direct human influence does vary. Yet I would disagree that a landscape can be characterised as either natural or man-made. And perhaps global climate change, what some would describe as the ultimate environmental challenge, will finally destroy this landscape dualism. I suggest this because global climate change presents anthropogenic environmental change on a truly global scale, thus affecting all landscapes, whether they were previously 'natural' or 'man-made'. Perhaps, for better or worse, the onset of anthropogenic global climate change will put an end to the idea that any landscape can be truly pristine and natural, that a Garden of Eden might still exist in the wilderness which can be preserved and maintained through careful management.

But where does this leave those environmental organisations? Do we simply have to choose what to protect in a different way, or does this herald the rise of a completely new approach in for the environmental movement?