Interesting debate... something to add?? http://www.wineterroirs.com/2009/12/bettane_richaud.html
All wines begin naturaly. press the grapes and then ferment. but then is where we step in as humans and change the wines. i think there are natural wines. but then again... who knows.
What is the definition of "natural?" All wine is more natural the CocaCola. Many producing regions do even not have a strict definition of "organic" wine, and the ones that do are not always consistent. Where there is a standard for "organic" labelling (e.g., Catalonia), it is my understanding that many producers that would qualify for an organic certification do not bother to so qualify, as the new label would suggest, falsely, that their production methods were somehow materially altered.
Of course, but you have the organic or bio wines regulations if you are worried with the agricultural side.... but if your worries are about winemaking... the so-called natural are wines with the least possible addition of chemicals....
Hey Walt, nice to read you again... as I have just written "natural wines" also try to avoid chemical during wine-making.... An extremely simplified view in: http://en.wikipedia.org/wiki/Natural_wine