1 . According to Michael Pollam, what is the big question facing individuals concerned about climate change? What is his strategy in referring to the "dark moment" in An Inconvenient Truth when Al Gore asks everyone to change light bulbs? What does Pollan mean by a "drop in-the-bucket- issue"?

2, What are the international realities that Pollan recognizes we must face, even if we individually decide to be "virtuous"? What are some of the "vex- ing questions" we must deal with if we want to do the right thing?