... so full of fail:
Thus, with an asterisk and a footnote reading Because we said so, the Medieval Warm Period was written out of the records. Not until the late 80s-90s had it ever been suggested that the Medieval Warm Period was anything less than positively balmy, much warmer than today, but suddenly with no evidence, upon the mere assertion of the Global Warming Cultists, it was asserted it had never happened. Not really. Not the world over, at least.