Environmental chemistry
The EPA is the best place to start if you are looking information on any environmental topic: EPA
Sulfur dioxide removal - Fluidized bed reactor
Color of hydrangeas affected by pH
carbon tracker - you can connect it to Googleearth
Greenhouse effect in detail part 1
Greenhouse effect in detail part 2
Ozone poster
How to measure dissolved oxygen
Eutrophication. Check out these experiments
Sources of artificial eutrophication
Photochemical smog presentation
typical wastewater treatment facility
CEC - Cation Exchange Capacity
Using lime to increase Soil pH
Soil PH and colour of hydrangeas