It will take you only five minutes, so take the quick online multi-choice test about what Al Bore calls "the most important issue facing the world today" and see how much you know.
My favourite answer appears in the question about the cause of the Little Ice Age; possible answer: "Global cooling occurred as a result of the Renaissance Period." Of course. Those blasted Florentians and their smog. ;^)
Link: The Global Warming Test.