Most of us have heard about the alleged sensitivity of animals to imminent earthquakes. This Japanese academic author makes quite a persuasive case that the anecdotal material has a solid core of reality to it and the sensitivity is due to animal reaction to precursory low frequency electromagnetic waves generated underground from piezoelectric effects on quartz. He reports a good deal of substantiating laboratory tests. This is quite clearly presented for the cutting-edge science it is. My only reservation is some speculative parts