 
the climate to change, are a significant factor in that change. The 
National Academy of Sciences of the United States of America, and I am 
proud of the United States of America, we are the world's greatest 
scientific authority in the world. Our National Academy of Sciences, 
the people to whom we trust the scientific intellectual treasure trove 
of America, a few months ago came out with a conclusion that human 
activities are a significant cause of the climate change that the world 
is now experiencin