Presentation about the Sierra Club

[RipCurl]

So I'm taking this public speaking class right now, and I chose the Sierra Club as a persuasive speech topic. I am speaking against it. I am currently doing research, and I was wondering if anyone had any good resources that I may not be aware of.

I think I am going to base my speech on the Blue Ribbon Coalition, Tread Lightly, and I might even go so far as to include some other organizations such as Ducks Unlimited, etc.

I have visited the websites of these organizations and have books on them, but I figured that this would be a good place to ask about it as you may have resources/experiences that relate to the Sierra Club that I do not.