i'm not in all honesty 100% sure over the methods used in obtaining temperatures from thousands of years ago. when referring to carbon dating i was meaning more along the lines of what suspect stated, the extraction of samples which are then tested to determine age and conditions. my terminology was poor so for that i apologise. what suspect described certainly sounded familiar in regards to documentary's i have seen however this afternoon i had a look for more information on the techniques used to obtain this information and was unable to find anything - if anyone has any links to this i would be interested to see them. at the same time i've never claimed to be an expert in the scientific processes behind extracting the data but then i don't think you have to to be able to decide for yourself if man has played a part in the undeniably changing climate of the planet. regarding the greenpeace director thats just an idiotic stance to take and is going to do nothing but harm the credibility of both him and his group who do a lot of good work in my opinion.