What Al Gore Doesn't Want You To Know...AGAIN

The more Al Gore talks, the dumber he gets. Should we really believe that he just doesn't know that:

• the Arctic was as warm or warmer in 1940 than it is today;
• that icebergs have been falling off the polar ice sheets since time immemorial;
• that the evidence so far suggests that the Greenland ice sheet is actually growing on average;
• Alpine glaciers have been retreating since the early 19th century, and were advancing for several centuries before that.
• Since about 1970, many of the glaciers have stopped retreating and some are now advancing again.
• And, frankly, we don't know why.

Or could it be that he knows all these things, but they won't help re-invigorate his political career the same way that irrational alarmism will? Could it be he also knows the mainstream press will never fact-check his story?

A dummy, or a liar--which one is it, Al?