I didn't believe it at first.
Could anyone think that the colour of blue paint chosen by a landscape painter a thousand years ago would be used by a so-called scientist today to deny the reality of global warming?
But there it is, via Chet, via Richard, we find the press release that argues today's global warming is just part of a 1500-year "natural cycle", see, because there are "thousands of museum paintings that portrayed sunnier skies during the [supposed] Medieval Warming" period.
Well, their skies were not only blue, but also full of astrological symbols and chariots, so I guess they had pollution of a kind too:
Chet notes that, when indoors, medieval people also apparently played chess sideways while surrounded by little musicians:
And I found that angels supplied medieval doctors with artificial legs for easy and bloodless surgical transplants:
Makes about as much sense as Medieval Warming...