A tidy little look at a fascinating phenomena. The Author does a nice job here of focusing on the topic without any extraneous puffery. Science reporting such as this is quite enjoyable to read. Firstly, because the Author writes well (except for one spelling error), and secondly, seems to enjoy writing about science. In the course of checking the links in the story, I happened upon some of his other work which is similarly well-done and informative. The video and imagery in the piece are most helpful and add further depth to the work. The general commentary included is relevant and adds context. A worthwhile read, especially for those inclined toward matters of science. Four stars!