Instruct: Classify a review into positive or negative sentiment.
Query: A good summary of new thinking on pre-European Americas, BUT...

As many reviewers have said, this book does a good job of presenting modern thinking on the state of the Americas before European "invasion". However, I find it to be a thinly disguised anti-wilderness polemic fitting in nicely with the current Republican movement against wild lands preservation, the Endangered Species Act, and other environmental efforts reversed during the last 6 years. The political undertones make it hard to accept much of the undoubtedly true recent anthropologic and archeologic work presented and ably discussed.