wrote:

That the world is warming is not in question, the numbers are obvious.
What is causing it to warm is still in debate (especially by the Bush
White House), but a great number of scientists feel that man and the
greenhouse gasses he produces is likely the root cause.

And a great number of scientists feel that man isn't the root cause.
But these scientists aren't getting grants to study global warming and
thus have less reason to want to perpetuate their studies and even give
reason to increase the money spent studying this topic.

Matt