1. What has a recent study by Swedish scientist Leif Kullman concluded about the earth's warming?

2. What evidence did Kullman use to come to this conclusion? Be specific.

3. To what have many scientists attributed the earth's warming to in recent years?

4. a) What new explanation have these scientists given for the earth's warming?
b) For what reason have they come up with this explanation?

5. How does climatologist Judith Curry view the warming and cooling trends in the earth's temperature?

6. How does Kullman's study confirm the belief that the climate is largely out of human control?

7. What do you think of Dr. Roy Spencer's conclusion about the cause of global warming and cooling?

8. Would the results of Kullman's study and the theories of the other scientists described in the article change your view on the theory that the human use of fossil fuels (oil, coal, gas) is causing impending catastrophic global warming? Explain your answer.