Global warming
A good place to start, with graphs and definitions to quote - http://en.wikipedia.org/wiki/Global_warming
Effects of G/W on agriculture – - http://www.epa.gov/climatechange/effects/agriculture.html
Effects on health - http://www.epa.gov/climatechange/effects/health.html
Effects on water resources - http://www.epa.gov/climatechange/effects/health.html
What can be done:
At home - http://www.epa.gov/climatechange/wycd/home.html
With waste - http://www.epa.gov/climatechange/wycd/waste/index.html
At school - http://www.epa.gov/climatechange/wycd/waste/index.html
By businesses and companies - http://www.epa.gov/climatechange/wycd/businesses.html
By state and local government - http://www.epa.gov/climatechange/wycd/stateandlocalgov/index.html
Air pollution in cities
Again, the ubiquitous Wikipedia – a good place to begin - http://en.wikipedia.org/wiki/Air_pollution
Air quality index – good information with several charts - http://en.wikipedia.org/wiki/Air_Quality_Index
Air quality in
Lots of fairly densely packed information - http://www.eoearth.org/article/Air_quality_in_megacities#Urban_Air_Quality
Similar for health impacts - http://www.eoearth.org/article/Air_quality_in_megacities#Sources_and_Health_Impacts
What is being done - http://www.eoearth.org/article/Air_quality_in_megacities#Air_quality_improvement_programs_in_megacities
Shortages of clean drinking water
Outreach International – great information with a short Youtube video on the subject - http://www.outreach-international.org/site/PageServer?pagename=google_lp_id&s_src=googlehcd&s_subsrc=googlehcd&s_track=googlehcd&gclid=CKvfjfCN6pUCFRaHMAodZj1WeQ
Ways to help - http://www.outreach-international.org/site/PageServer?pagename=help
Get involved - http://www.outreach-international.org/site/PageServer?pagename=informed
A good blog to read up on related topics - http://www.foodandwaterwatch.org/blog/topics/water%20shortage
Youtube on
Read about the problems in the UAE - look at this Gulf News article - http://www.gulfnews.com/nation/Environment/10247657.html
Fatal pollution – leaving plastic in the deserts of the region
Some quick facts on this form of pollution - http://www.greenfeet.net/newsletter/quick-facts-on-plastic-pollution.shtml
General information on the topic - http://www.ocean.udel.edu/mas/masnotes/plastic.html
A site with information, graphics and pictures - http://www.blueplanetsociety.org/about8.html
The Environmental Blog – information and pictures - http://www.theenvironmentalblog.org/2007/10/plastic-pollution-in-pacific-waters.html
Things you can do to be environmentally friendly - http://www.theenvironmentalblog.org/2007/09/5-things-you-shouldnt-do-when-trying-to.html