Searching for Climate Change

John Christy: Over time, I‟ve seen climate
become, rather than a science, more of a political
and religious issue. So let‟s look at climate from
a scientific perspective.
Michael Crichton famously said, “Consensus is
not science.” In regard to the climate, you often
hear, “consensus says this,” or “consensus says
that.” Yet if you have to vote on it, that‟s not
science—that‟s political activity. We know what
science is: All science is numbers. Lord Kelvin
told us that a century and a half ago. You
measure something, you put it into a number, and
then you know something about your subject. My
favorite author said this: “Some people will do
anything to save the earth—except take a science
course.” That was P.J. O‟Rourke, and he actually
had numbers to back up his statement: He showed
that Americans are taking fewer and fewer of the
hard science courses. We have fewer and fewer
American graduates in the hard sciences today.
Science is difficult, and a lot of people don‟t like
that.

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