It is commonly held perception that dams are environmentally friendly, but on the contrary it has been proven that dams can be very harmful for the environment. Here at the pkpolitics some people have been creating biased perceptions based on their own political views. Here are some of the links which might be useful for the people who want to study about the dams and their impact on the environment.
1) http://en.wikipedia.org/wiki/Environmental_impacts_of_dams
2) http://www.scientificamerican.com/article.cfm?id=chinas-three-gorges-dam-disaster
3) http://viewer.zmags.com/publication/534da32d#/534da32d/11
