Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Masters of the Living Energy

This is an awesome book containing information that is very timely and much needed to save our planet. - Only one criticism - this is an updated version of Keepers of the Ancient Knowledge but the only way to find out is by reading the introduction. Unfortunately I ordered both books and had to return Keepers. It would be awesome if Amazon had a way of letting customers know about updates with different names.Thank you.