More on greenhouse effect from Fact Monster:

• Milestones in Environmental Protection - Preservation and conservation milestones in the United States
• Earth Day: Environmental Milestones - Earth Day by Elissa Haney Earth Day was established in 1970 at a time when social activism was at a ...
• Perils of Pollution - Perils of Pollution Global Warming Many scientists believe human-caused pollution is making the ...
• User's Guide to Environmental Language - User's Guide to Environmental Language acid rain: Rain contaminated with pollutants such as ...
• POLLUTION - Pollution is waste that we put into the environment. It can harm plants and animals, including humans. Pollution comes from factories, and also from h

See more Encyclopedia articles on: Environmental Studies