Cost benefit analysis is arguably the dominant analytical tool in the United States, and a concern of environmentalists has always been the lack of consideration of environmental costs and benefits. The popular idea is the valuation of "ecosystem services" so the value of nature can be monetized in the same game. I have been of the view that given the demand for monetization and quantification, valuation of ecosystem services is a net benefit, but this article in the Guardian suggests that this may be a sellout position.