Quote:
Originally Posted by Rajoo
There is no proof of that since the thermometer was only invented in early 1700. So if the earth did indeed go through heating/cooling cycles there really is no precise record.
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You can't be serious, so I'll assume that you're joking here. But just in case....
There's plenty of evidence of large - scale climate shifts. In fact, the debate really isn't whether current climate change is unique in its occurrence. The debate is whether the rapidity of current climate change is different than climate change that has occurred in the past.
http://oceanservice.noaa.gov/educati.../iscurrent.pdf
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