This was a fascinating book. Dr. Gilbert's commitment to the welfare of grizzly bears is compelling, considering that he was mauled and almost killed by a grizzly some forty years ago. He conveys a strong sense of what an ecosystem is, in this case, the relationship between bears, salmon and coastal waters. What happens to bears if the waters grow warmer (and salmon numbers fall)? Moreover, Gilbert makes clear that a bear allowed to roam its traditional trails in search of food will tolerate humans, and is not dangerous - but as roads and resorts invade bear country, grizzlies lacking a route to food will take to raiding garbage and campsites. This is an eye-opening study. At times I felt that the discussion might have gone too far "into the weeds" for a layperson (lots of politics surround the diminution of the grizzly), but on the whole, this is a stirring book, one that will allow you to appreciate both the beauty and intelligence of these bears, and the astounding dedication of this biologist.