Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Early climate change novel

This was written decades ago, but the message still lingers for me. I read this book when it was first published, and it just amazed me. I even bought extras to give to others. The world's climate is changing radically. Ozone layer breakdown is leading to more skin cancer, water levels are rising in some areas while drought strikes formerly arable land. The vast majority of it was just amazing and eye-opening for me. Granted, other novels that have come since this one may have done a better job with the science, and the earth-spirit thing of this one is a bit outside of sci-fi, but this was still my first. It will always stick out in my mind as very special.