Are all scientists the same? Are they all experts on global warming?

Thomas Sowell has a couple of interesting articles on global warming and all those scientists mentioned, cited or quoted by global warming crusaders... Mr. Sowell points out that

There are all kinds of scientists, from chemists to nuclear physicists to people who study insects, volcanoes, and endocrine glands -- none of whom is an expert on weather or climate, but all of whom can be listed as scientists, to impress people who don't scrutinize the list any further. That ploy has already been used.

Then there are genuine scientific experts on weather and climate....

... Are there serious scientists who specialize in weather and climate who have serious doubts about the doomsday scenarios being pushed by global warming advocates? Yes, there are.

There is Dr. S. Fred Singer, who set up the American weather satellite system, and who published some years ago a book titled "Hot Talk, Cold Science." More recently, he has co-authored another book on the subject, "Unstoppable Global Warming: Every 1500 Years."

There have been periods of global warming that lasted for centuries -- and periods of global cooling that also lasted for centuries. So the issue is not whether the world is warmer now than at some time in the past but how much of that warming is due to human beings and how much can we reduce future warming, even if we drastically reduce our standard of living in the attempt.

Other serious scientists who are not on the global warming bandwagon include a professor of meteorology at MIT, Richard S. Lindzen.

His name was big enough for the National Academy of Sciences to list it among the names of other experts on its 2001 report that was supposed to end the debate by declaring the dangers of global warming proven scientifically.

Professor Lindzen then objected and pointed out that neither he nor any of the other scientists listed ever saw that report before it was published. It was in fact written by government bureaucrats -- as was the more recently published summary report of the Intergovernmental Panel on Climate Change (IPCC) that is also touted as the final proof and the end of the discussion.

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