Green Group discussion

I kind of stole this idea from the History Group, but I think it's really helpful.

This topic is for people who are looking for a recommendation on a particular topic IE: green building, weather patterns, ice melting, polar bears, anything related to the environment, natural resources, etc.

Then if you have read or heard about a book on the topic they are looking for, please feel free to post suggestions and maybe why you think it fits if that is not readily apparent from the title/cover.