1. What is the difference between weather and climate?

2. How has past climate warming affected human life on Earth?

3.  How do sunspot cycles affect our weather?

4. Are there other changes in the sun's radiation responsible for the warming we have experienced so far?

5.  Why is carbon dioxide a problem? What are other greenhouse gases? 

6.  Couldn't we just plant more trees to solve the problem?

7.  What caused the ice ages?

8.  Since we are now in an interglacial period, shouldn't we expect this kind of warming as a natural event?

9.  How do the computer models which predict global warming work?

10. Do all of the computer models agree with each other?

11. How do we know that anything the computer predicts might occur if we don't know all of the processes at work in the atmosphere and ocean?

12. According to the computer models, what would happen in North America if the amount of CO2 in the atmosphere doubles from its pre-industrial revolution levels?

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