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"Most sane scientists recognize this to be due to the upward swing of a very long term natural ~1000 year temperature cycle whose last high point occurred around 1000AD and whose last low point occurred around 1500AD."

Medieval Warm Period = 950 AD to 1250 AD

Little Ice Age = 1550 AD to 1850 AD

Come on cosserat, it is not fair to bring both science and historical facts into a global warming discussion.