nasa chief on global warming

NASA Chief on Global Warming

NASA chief Michael Griffin offered some interesting thoughts on global

warming this morning on NPR. Here's an excerpt:

"I have no doubt that...a trend of global warming exists. I am not

sure that it is fair to say that it is a problem we must wrestle with.

To assume that it is a problem is to assume that the state of Earth's

climate today is the optimal climate, the best climate that we could

have or ever have had and that we need to take steps to make sure that

it doesn't change. First of all, I don't think it's within the power

of human beings to assure that the climate does not change, as

millions of years of history have shown. And second of all, I guess I

would ask which human beings -- where and when -- are to be accorded