All the scaremongering that goes around claims that global warming is something that we have never seen. 'Unprecedented!' we are told. but of course, those who know geology know what a crock of, well you know what, that is.
"Radiocarbon dates of peat from the top and base of a bog exposed by recent retreat of Rutor Glacier show that the glacier front terminated upvalley from the bog from 8400 until at least 6000 B. P. The evidence is consistent with botanical data that point to a high tree line during the interval and to reconstructed mean July temperatures at least 4oC warmer than present temperatures."
Stephen C. Porter and Giuseppe Orombelli, "Glacier Contraction During the Middle Holocene in the Western Italian Alps: Evidence and Implications," Geology, 13(1985), p. 296
Consider that for 24 years we have known that the the Alps were significantly warmer 6000 years ago than at present. But 4 degrees? Lets put that in perspective. The IPCC says that the world will warm 2 to 5 deg C per doubling of the CO2. Since the world has already seen that much warming just as civilization started, we really have little to worry about. Life on earth won't end just because we once again warm by 4 deg C.
"This evidence supports the hypothesis that mountain glaciers were in a contracted state for several millennia during the middle Holocene Hypsithermal interval. It is also consistent with results of recent paleoclimatic reconstructions of Europe that, on the basis of pollen data, indicate the mean July temperature in the western Alps was at least 4o C warmer about 6000 B.P. than it is today." Stephen C. Porter and Giuseppe Orombelli, "Glacier Contraction During the Middle Holocene in the Western Italian Alps: Evidence and Implications," Geology, 13(1985), p.298
If only the hysteriacs and Holocene deniers would actually look at the scientific data they would understand how silly they sound.