As Vivian noted, energy cannot be destroyed, but it does change forms. We are all made up of the basic stuff of the universe in one way or another, the things that made up our planet became part of plants and animals, we eat them and they become part of us and our children. Eventually, we die and it starts all over again, we're converted into base materials by bacteria and fungi and move on in the chain. This sounds spiritual and I kind of see it that way sometimes but its also practical. I think most likely, in times of stress or anxiety, our minds play tricks on us. Its well known that our minds use previous images constantly in processing of visual information, in the dark when looking for something, your mind is constantly pattern-matching to assist what you can see, and its no surprised that we sometimes "see" things that are not there.

I'm a fairly open-minded type, but I also try to be rational about things. On the one hand, I'm quite sure that ghosts as our perception of them when we're at home all alone incorrect. However, the quantum world is a spooky one, and there is no telling what can really happen. What, in the end, is the real difference between now and then, here and there? Questions of what time really is rage on to this day (NS had a good article about that the other day but you can only read it if you are a subscriber). As such I can't entirely discount that weird things might happen, echo's of a time and place. That said here is also no real evidence of it, mostly anecdotal so that doesn't mean it happens. I don't think that if something supernatural happens it isn't actually supernatural, but possibly a part of nature we don't quite understand. (but not likely, most likely its totally explainable we just jump to conclusions)

I've always thought "supernatural" described anything that defies the natural laws of the universe. Like God or Santa Clause or miracles or whatever. How does that not make sense?.