You remember Rustum Roy and his attempts to measure changes in water structure caused by people all over the world really, really wanting the structure to change? Yes, the results are in! There's good news and bad news. First the good news: apparently "something happened", but the bad news is that "we're not sure what".
The intention experiment failed to change the structure of water. I'm quite surprised, actually. My prediction that they would find some changes in the water because it was such a poorly designed experiment has not come true. The sample "had enormous variation in light scattering to begin with", but there were no profound changes recorded. I would suggest that the variation is probably instrumental noise, but no actual results have been shown, so it would be impossible to tell even if I knew much about Raman spectroscopy.
Why did the best intentions of so many people fail? You might say "because trying to change water structure through the power of the mind doesn't work". And, to be fair, the intention experiment people have this eighth on their list of possibilities. Because "Although all of our other studies have produced a measurable effect, this hypothesis must always be considered". But not considered that seriously, you understand.
What could the other reasons be? The wildest one is the suggestion that "intention works out of time" (which I suppose is no dafter than imagining that intention works in the first place). Of course, here any recorded change in the water whatsoever, at any time, could be attributed to 'intention', so this isn't what you would call testable. Other suggestions include water purity (even the purest water is grossly contaminated, and having it sat on a lab bench with a probe in it is not going to help), environmental factors (a thunderstorm during the measurement), and problems with the experimental protocol. So the experiment will be repeated in a couple of months.
Some of the comments are fun. One commenter writes "This is what experimentation is all about. You just keep trying until you can verify your conclusions...". Another writes "I'm convinced that intention works. I don't see the need for further experiments". It seems that any negative result would have to be wrong, because we all know that it works. This is how homeopaths think, and is pretty much exactly what is meant by cargo-cult science.
It's worth remembering, of course, that all of this is based on Rustum Roy's evidence-free assertions that there is such a thing as 'healing water', that 'healing water' has a different structure from ordinary water, and that you can change the structure of water by thinking about it. Obviously it would be nice to really, really want a beaker of water to cure cancer, and have it work, but I think it might be worth persevering with proper biomedical research for now.