My midterm paper topic

I think I've finally figured out what I want to research for my midterm paper. Orginally I had planned on global warming, but that was way too broad of a subject. After reading through some artcles in the Global Issues; Local Arguments book, specifically the chapter "Environmental Resources and Rights" I've decided that I want to write my paper over the water and how it is a limited resource. I think that there's a lot that I can say about this subject, even though you can easily fill pages and pages over environmental resources and how they are being threatened, I think that I can more easily manage to cover water in 5 pages rather than cover global warming in only 5 pages. Also, I can easily talk about the connection between globalization and water. Many say that big corporations that control water distribution can easily take advantage of the scarcity of environmental reserves, with the only goal of profit in mind, rather than people. While others say that privatizing water is the most effecient way to go.