Green House Effect website

http://www.ucar.edu/learn/1_3_1.htm

How many planets do YOU use?

http://www.footprintnetwork.org/en/index.php/GFN/page/calculators/

The story of stuff

http://www.storyofstuff.com/

Small Change Can Make a Difference

http://www.vancouversun.com/news/Earth+Small+efforts+create+change/2937942/story.html

Oil consumption in AMERICA

http://tonto.eia.doe.gov/energyexplained/index.cfm?page=

Aral Sea extra info and reading..

http://www.sidym2006.org/imagenes/pdf/presentaciones/9_s2.pdf