1. 5 is the number of planets we would need if everyone lived like the average North American.
http://www.wwf.org.uk/filelibrary/pdf/opl_brochure.pdf

2. Shoppers worldwide are using 500 billion to 1 trillion plastic bags per year. This translates to about 150 bags a year for every person on earth.
http://www.algalita.org/pdf/Action-sheet.pdf

3.83 percent of Americans now say global warming is a “serious” problem.
This is up from 70 percent in 2004.
http://www.webwire.com/ViewPressRel.asp?aId=30085

4.4. According to some calculations, eating just 3 burgers a week can add between 941 and 1,023 pounds of greenhouse gases each year.
http://www.treehugger.com/files/2006/12/the_carbon_foot_1.php

5.The average American has about 2.5 times the ecological footprint of the average Italian.
http://www.footprintnetwork.org/index.php

(from Treehugger.com)

- Matt