Source 21

http://www.nature.com/nature/journal/v437/n7055/edsumm/e050901-08.html
1. This site comes from the International Weekly Journal of Science.
2. The author of this article is the editor of this news network.
3. Their credentials are being editor of this news network.
4. This source is saying that China's expansion of economy and such has hurt the environment.
5. Yes.
6. I believe this source because it comes from an extremely credible source and was written by the editor of that news source.