Instruct: Classify a given Amazon review as either positive or negative.
Query: Mars on Earth

This is an excellent read for anyone interested in the development of a permanent Mars habitat. The author begins with an overview of the development of a realistic plan to put a permanently manned base on Mars using currently available technology and feasible funding requirements. Discussion then follows regarding the founding of the Mars Society and their ongoing projects of developing and installing Mars analog scientific stations on Earth. International scientists volunteer their time and talents to do real science in the field under conditions analogous to working on Mars. This book is well written and reads like an adventure novel. I only wished it contained more hard detail regarding the design and construction of the habitats and analog space suits.