Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Information everyone under sixty should know

An unparalleled, unflinching reminder of how far the environmental community has come since 1970, and how far it has to go. The biggest highlight of the text is also environmentalism's greatest challenge, the war against complacency. We should be able to fish for our supper, breathe clean air, drink pure water, etc. Two men from far different backgrounds stood up and said "so, why aren't we?" Especially thrilling to this former Republican was the chapter "Barbarians at the Gate" which discusses Newt Gringrich and the "Republican Revolution" and their attempts to thwart existing environmental regulations. Who knew Gingrich was a member of the Sierra Club? I have given away seven copies of this book and have read it myself over twenty times. I highly recommend it to anyone who plans to be alive for the next twenty or thirty years.