Hey, if you have access to HBO, there is a great new episode of Vice (currently my favorite in depth news show) covering the amount of meat we consume and how it affects our environment, and how potable water is now running low in so many places.
(broken link removed to http://www.hbo.com/vice/episodes/04/41-meathooked-and-end-of-water/index.html)
(broken link removed to http://www.hbo.com/vice/episodes/04/41-meathooked-and-end-of-water/index.html)