World Population Increases:

http://www.fsec.ucf.edu/ed/EIE/population.htm

http://www.peopleandplanet.net/doc.php?id=199$#38;section=2

http://www.un.org/esa/population/publications/wup2001/WUP2001-pressrelease.pdf

http://news.nationalgeographic.com/news/2001/04/0417_wlpopulation.html

Ozone:

http://www.awma.org/resources/education/ozone.pdf

http://www.sfu.ca/~phui/projects/solutions.html

http://www.epa.gov/docs/ozone/science/science.html

http://www.osearth.com/resources/recall/o3depl.shtml

Global Warming:

http://www.climatehotmap.org/

http://www.globalwarming.org/

http://www.ncdc.noaa.gov/oa/climate/globalwarming.html

http://www.nrdc.org/globalWarming/default.asp