Seriously, by all calculations the world was a couple of degrees warmer 1000 years ago. The Greenland ice sheet did not melt, the seas did not flood the land, and the polar bears did not become extinct.
This is why Michael Mann's notoriously bogus "hockey stick graph" left the Medieval Warming and the Little Ice Age out -- because they prove that the Algorian "We're all gonna die" scenario is bunk.
That is: Your Global Warming movie is a bunch of merde de taureau. Until you morons can explain why we didn't all die last time, but we're all gonna die this time, you have no argument.