Here is that book I mentioned in class about ways to help the environment:
Michael Brower and Warren Leon, The Consumer's Guide to Effective Environmental Choices, Three Rivers Press, New York, 292pp, 1999. (about $15 in paperback)
Professor Hartmann's Home Page
Student Ratings from 1996 Class - I like to do a good job teaching. Here is the student evaluation summary for the last time I taught this class. I received an average of about 4.0 = very good on most questions. While I don't think student ratings are the ultimate evaluation of the value of a class, I think it is a good sign if the students feel positive about the class at the end of it.