It is interesting to note that while the headline of the article reads: "Near death experiences could come about by something as mundane as raised levels of carbon dioxide, scientists suggest", clearly an attempt at suggesting a purely physical, and hence reductionist, explanation for the phenomenon, Zalika Klemenc-Ketis, the research leader, when asked if the study would rule out a paranormal component said: "I don't think that, based on our study, we can say that paranormal believers are wrong. We have simply found out that one of the factors that could play a role in provoking the NDE, is carbon dioxide. But a lot still has to be done to totally explain this phenomena."
I wonder why the media is so keen to present such stories as though they were evidence against a supernatural reality?