What is the greenhouse effect, and how does it work?
Are global warming and the greenhouse effect the same?
What are the main greenhouse gases, and what are the natural and anthropogenic sources of these gasses?
What is the present level of atmospheric carbon dioxide? Why has carbon dioxide concentration risen since 1860?
What are some predicted environmental damages if carbon dioxide emissions are not reduced?
Based on scholarly research, how certain do you need to be about future predictions before acting on this problem? Discuss computer models or another form of predictive research