<a href=showthread.php?s=&postid=12828517#post12828517 target=_blank>Originally posted</a> by LauraCline
Also, fossil evidence shows that the earth has gone through warming and ice ages in the past similar to what we are observing now.
Great rant, worthy of the discussion. The thing I think that needs to be pointed out is that the Glacial Evidence shows that while the earth has gone through warming and cooling trends before there are some distinctions in the climate change that we are encountering now.
First, never in the history we can gleam from fossil, glacial, geologic records have we ever seen such rapid changes int weather patterns and the over all temperature of the globe.
Second, the rise of CO2 and other Green House Gasses, but CO2 primarily, has never increased at the rates we are seeing. Since the industrial revolution in the late 1800's we are seeing CO2 concentrations going up, up, up. These levels are already at levels well above the highest levels seen in the glacier ice that gives us samples dating back 1000's of years.
I think we all can accept that the earth is warming. I think that now the vast majority of scientists also believe that the increase is infarct not just a natural progression of cycles, but in fact a result of our polluting the world we depend on.
I remember when I was a young kid in grade school. We were being told back then that the Earth current cycle the earth was on was a cooling trend and that the permafrost would extend well south of the Canadian borders. The population would be forced to migrate to the tropics, where we would have the best chance of survival. It is amazing how the story has changed in 20 years. The normal cycle that the earth was on swung from cooling to warming, to what appears to be overheating. It is amazing what 20 year of increased scientific study and better technique has shown us. Question is if we are to stubborn to change our ways, or if we can actually make a change while we have time to effect the outcome.