Clearly, a nonfiction book published in 1990 is not going to be completely reliable in the 2020s and beyond (the Soviet Union is referred to in the present tense throughout!), and the situation for polar bears today is more grim than what the author describes at the end of the book. However, I would recommend this book today not just for the information on biology and ecology, but also for the beautiful writing. Feazel reminds us that nonfiction does not need to be boring. It's one of the most well-written nonfiction books I've come across in a while. (Although I did raise an eyebrow at the sentence, "Summer is a time of segregation in this all-white community.")