http://www.pbs.org/strangedays/index.html
doesnt look like the site is working right now but I heard Ed Norton talking about this 2 part series this morning.
Sounds interesting and supposedly its not all doom and gloom about the earth like most educational pieces.
There is a part where they talk about fish farming in the middle of the ocean with the huge screened cage things... supposed to help reduce pollution.
probably will check it out. I think it airs tomorrow