It's clear this is a phenomenon...too much subjective evidence to rule it out. He appears to have approached this from a fairly scientific approach and appears to have gathered some quantitative evidence. Where it breaks down is in the drawing of conclusions.

The real problem with this issue appears to be in the lack of interest from others in the scientific community to properly investigate it. If his theory about gas pipelines has merit, then it seems like there would be some simple ways to investigate and test that.