Pollution charts?

Question

What are some websites that show how pollution(water, air, and soil contamination) either or, have changed over the course of the years?

Answer 1

Hope these are helpful:

http://www.lec.lancs.ac.uk/research/LU_t...

http://www.panda.org/about_wwf/where_we_...

http://ideas.repec.org/a/kap/enreec/v16y...

http://www.davidsuzuki.org/Climate_Chang...

Environmental History podcast:

http://www.eh-resources.org/podcast/podc...

Pollution history documented through shell remains provides tool to study ecosystem change:

http://news.bio-medicine.org/biology-new...

This one deals with Noise Pollution making birds change their tunes:

http://www.greenchange.org/article.php?i...