Bob Noel wrote:

In article ,
Stefan wrote:



Greenland once was, well, green in the tenth century when Eric the Red
discovered it. Oranges grew in Ireland then. The Medieval Warming Period


The common argument. It's true. But it prooves exactly the opposite of
what you think it does.

The point is, look at the climate then and what the effect of a tiny
change was.



Was it cause and effect, or just correlation?



Another factor is the shifting of the Earth's core. IIRC, there was
something in the news the last year or so reporting something along
these lines.