Sustainable Agriculture - http://www.nal.usda.gov/afsic/pubs/terms/srb9902.shtml#toc1

Snowball Earth Hypotheses - http://www.pbs.org/saf/1103/features/deepfreeze.htm

Arsenic and the Environment - http://www.atsdr.cdc.gov/tfacts2.html

Earth Observing Systems - http://www.epa.gov/geoss/

War and the Environment - http://www.ppu.org.uk/learn/infodocs/st_environment.html

Xenoestrogens (Environmental impact on human hormones) http://www.mnwelldir.org/docs/cancer1/xeno.htm

Auquaculture - http://aquaculture.noaa.gov/

Sustainable Agriculture (Maintaining agriculture) - http://attra.ncat.org/fundamental.html

Temperature Climate Change - http://www.epa.gov/climatechange/science/recenttc.html

Everglades (Threats and Restoration) - http://www.nps.gov/archive/ever/eco/threats.htm

Fuel Cells - http://www.eesi.org/publications/02.00fuelcell.pdf

Nuclear Energy - http://www.eia.doe.gov/kids/energyfacts/sources/non-renewable/nuclear.html

Chlorofluorocarbons - http://www.purdue.edu/envirosoft/housewaste/house/chlorofl.htm

Nuclear Energy - http://www.nrc.gov/reading-rm/basic-ref/students.html#nuclear_energy

Salmon Farming - http://www.sciencedaily.com/releases/2003/09/030923064756.htm

Shrimp Farming - http://www.shrimpnews.com/About.html

The Artic and Rising Temperatures - http://www.nrdc.org/globalwarming/qthinice.asp

Prehistoric Warming - http://news.nationalgeographic.com/news/2007/04/070426-volcano-warming.html

Wave Energy - http://www.ocsenergy.anl.gov/guide/wave/index.cfm

Tidal Energy - http://www.eia.doe.gov/kids/energyfacts/sources/renewable/ocean.html

Water Wars - http://www.globalpolicy.org/security/natres/waterindex.htm

Pharmaceutical Crops - http://archive.greenpeace.org/geneng/reports/food/pharmQ&A.pdf

Soil Contamination - http://www.epa.gov/superfund/students/wastsite/soilspil.htm

Pesticides - http://pubs.cas.psu.edu/FreePubs/pdfs/uo199.pdf

Acid Rain - http://www.epa.gov/acidrain/

Aerosol and the Ozone Layer - http://www.epa.gov/iaq/pubs/ozonegen.html

Animals and Habitat Loss - http://www.greenpeace.org/international/campaigns/climate-change/impacts/habitat_loss

Bhopal (greatest industrial disaster - Gas Leak) - http://www.bhopal.org/whathappened.html

Biofuels - http://www.bp.com/home.do?categoryId=4700&contentId=7041646

Bioremediation - http://ei.cornell.edu/biodeg/bioremed/

Carbon Monoxide - http://www.epa.gov/iaq/co.html

Coal Power (new methods) - http://www.fossil.energy.gov/programs/powersystems/cleancoal/

Composting - http://web.extension.uiuc.edu/homecompost/methods.html

Danube Cyanide Spill - http://forests.org/archive/europe/romcyspi.htm

Declining Coasts - http://www.unesco.org/csi/intro/coastse.htm

Deforestation - http://www.nationalgeographic.com/eye/deforestation/effect.html

Dolphin Conservation - http://www.dolphin-institute.org/resource_guide/conservation.htm

DDT - http://www.atsdr.cdc.gov/tfacts35.html#bookmark01

Ecotourism - http://www.ecotourism.org/webmodules/webarticlesnet/templates/eco_template.aspx?articleid=95&zoneid=2

Endangered Species (choose one animal) - http://www.worldwildlife.org/endangered/index.cfm

Energy Flow Through the Ecosystem - http://www.marietta.edu/~biol/102/ecosystem.html#Energyflowthroughtheecosystem3

Animal Evolution and Environmental Change - http://necsi.org/projects/evolution/evolution/change+isolation/evolution_change+isolation.html

Environmental Factors and Erosion - http://www.hrwc.org/text/wqsedimentation.htm

Exxon Valdez Oil Spill - http://www.eoearth.org/article/Exxon_Valdez_oil_spill

Fertilizers / Farm Runoff - http://www.purdue.edu/envirosoft/fert/src/farmpond.htm

Fossil Fuels - http://www.umich.edu/~gs265/society/fossilfuels.htm

Genetically Engineered Food - http://www.csa.com/discoveryguides/gmfood/overview.php

Human Migration - http://www.nationalgeographic.com/xpeditions/lessons/09/g68/migrationguidestudent.pdf

Hurricanes - http://hurricanes.noaa.gov/

Hybrid Vehicles - http://www.howstuffworks.com/hybrid-car.htm

Hydrogen Power - http://www.eia.doe.gov/kids/energyfacts/sources/IntermediateHydrogen.html

Hydropower - http://www.eia.doe.gov/kids/energyfacts/sources/renewable/water.html

Indoor Air Pollution / Air Quality - http://www.epa.gov/iaq/

Landfills - http://www.eia.doe.gov/kids/energyfacts/saving/recycling/solidwaste/landfiller.html

Logging and the Environment - http://search.atomz.com/search/?sp-q=logging&sp-a=sp1001da90&sp-x-1=collection&sp-q-1=National&sp-t=site_wide&Image1.x=15&Image1.y=5

Love Canal Pollution Crisis - http://arts.envirolink.org/arts_and_activism/LoisGibbs.html

Meat Packing Industry - http://www.osha.gov/SLTC/meatpacking/index.html

Nuclear Energy - http://www.eia.doe.gov/kids/energyfacts/sources/non-renewable/nuclear.html

Nuclear Power - http://www.nei.org/resourcesandstats/documentlibrary/protectingtheenvironment/policybrief/nuclearenergyreducinggreenhousegasemissions/

Population and the Environment - http://www.actionbioscience.org/environment/hinrichsen_robey.html

Radiation Pollution - http://www.epa.gov/radiation/index.html

Radon - http://epa.gov/radon/

Recycling - http://www.epa.gov/epaoswer/non-hw/muncpl/recycle.htm

Smog - http://library.thinkquest.org/26026/Environmental_Problems/smog.html

Solar Power - http://www.powerhousekids.com/stellent2/groups/public/documents/pub/phk_ee_re_001505.hcsp

Strip Mining - http://library.thinkquest.org/05aug/00461/stripm.htm

Tornadoes - http://www.fema.gov/kids/tornado.htm

http://www.nssl.noaa.gov/edu/safety/tornadoguide.html

Tsunamis - http://www.tsunami.noaa.gov/

http://www.fema.gov/kids/tsunami.htm

Human Migration and Environment - http://www.panda.org/about_wwf/what_we_do/policy/people_environment/pop_health_environment/migration/index.cfm

UV Light and Amphibians - http://cgee.hamline.edu/frogs/science/malform.html http://magma.nationalgeographic.com/ngexplorer/0403/articles/mainarticle.html

UV Light and Humans - http://www.nas.nasa.gov/About/Education/Ozone/radiation.html

Vehicle Emissions - http://www.epa.gov/greenvehicles/Index.do;jsessionid=8230c01d9b931f43126b

Water Pollution - http://www.epa.gov/ebtpages/watewaterpollution.html

Wildfires - http://www.usgs.gov/hazards/wildfires/

http://www.fema.gov/kids/wldfire.htm

Windmills as Energy Sources - http://www.eia.doe.gov/kids/energyfacts/sources/renewable/wind.html

http://lsa.colorado.edu/essence/texts/wind.htm