This book has the distinction of not going overboard with any theory or thought. There are a lot of weird phenomena in this world and these are just few of the more interesting and better known ones. They missed the one about how people started to get radio shows from twenty or so years ago for an evening. Odd, but a one time event that has not repeated itself, nor is there any way of exploring what happened as there is no physical remains to work with.
They give some of the current thoughts on Stonehenge and the pyramids, and also give the various new age or superstitious notions that are running around. I liked that the book did not take any thing away from the weird thinking people have, only reported it.