If perfect is the enemy of good, then sometimes proof is the enemy of action. Empirical evidence is not enough to prove causation from correlation, but there is a point at which the common-sense filter simply has to apply.
Fact: The ice cap on Mount Kilimanjaro formed 11,000 years ago.
Fact: the ice fields at the summit have shrunk by 80% in the last century.
Prediction: the snow cap will be gone in one or two decades.
Twenty years from now, I will look back at this archived blog entry, and show it to the idiotarians who still insist that global warming is a liberal fable.
UPDATE: Note that those people who simply have doubts about some of the science, but who don't dismiss all evidence of warming out of hand, are not who I am labeling idiotarians.
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