The negatives about the book for me were that a lot of space was dedicated to endless gatherings in which participants discussed the possible role of nuclear radiation on human health. Some of the major gatherings could have been used to make the same points without resorting to discussing seemingly every meeting that involved Dr. Stewart. Also, some of the early history involving Dr. Stewart's family was over done. Nevertheless, the section that drew my interest in the book in the first place, that wherein she discovered the negative effect of X-rays on unborn fetuses was fascinating. When I can take excerpts of a book for use in the classes that I teach, I consider the book well worth my time. Dr. Stewart had much going against her when she made her discovery, yet her persistence and insistence that she was correct were inspiring. Today's medical profession takes it for granted that X-rays are not to be used on unborn fetuses. There was a time when that was not so and we have Dr. Stewart to thank for demonstrating that. Even after clearly showing that leukemias and other cancers were associated with fetuses rayed in utero, it still took her years to convince the obgyn physicians to stop using that tool. An interesting observation in the book was a rhetorical question, "What if someone showed that using sonograms is not good for fetuses, would we see the same reluctance that took Dr. Stewart years to overcome?". Several chapters depicting the discovery and the results of her X-ray effect discovery were 4-5 star reading for me, but overall the book bogged to my final rating of two.