Unfortunately, the other lad didn't provide a link to your Nature article/book review. So: http://www.nature.com/nature/journal/v450/n7170/full/450612a.html
Philosophy aside, I suggest the duality (of course only one of many which permeate humanity) of natural/artificial is limiting. Perhaps the terms 'evolved' and 'developed' (both being of the same cosmos you know), with the focus on each's inherent function, vs moral/social role. One of many possible steps toward a neutrality of conception....and function.
From: Greg Bear
I agree that the duality is deceptive. We are part of nature. Our creations are part of nature as well.