Martin Grosjean [said] "But what we do know is that the climate has fluctuated throughout history; in the past the driving force for the changes was the Earth's orbital pattern, now the driving force is green house gas emissions."
For Martin Grosjean, the leather items found on the Schnidejoch, dated at over 5,000 years old, are proof, if any more were needed, that the Earth is now warming up.
"The leather is the jewel among the finds," he says. "If leather is exposed to the weather, to sun, wind and rain, it disintegrates almost immediately.
"The fact that we still find these 5,000-year-old pieces of leather tells us they were protected by the ice all this time, and that the glaciers have never been smaller than in the year 2003 and the years following."All these finds do indeed make clear that the glaciers are now retreating/melting and (duh) that hence the earth is warmer now than it was before. But you note that previous bouts of global warming are pinned on the earth being in a certain orbital pattern whereas the current one is blamed on mankind. I'm not sure why this is. We are given information in the article that the alps have been warmer and that this occured (roughly) 1000 and 2000 years ago [actually the article doesn't say that it just mentions warming in Roman times (i.e. 2000 yearas ago) and in the Middle Ages (1000 years ago)]. The article also mentions things that are 3000, 4000 and 5000 years old.
"The leather is the jewel among the finds," he says. "If leather is exposed to the weather, to sun, wind and rain, it disintegrates almost immediately.Is it just me or is that not further evidence that glaciers can grow very very fast and hence that ice ages and other cooling events can be very swift?