meehl? >> choose to add to that. this analysis we did we're looking at basically temperature records the second half of the 20 century from weather stations that had good data records. this is a bigger problem than just a thermometer problem. have stations reporting their daily high to mature and get no temperature, every day so you have a lot of data records. this ratio which is now to the one which we thought was kind of odd, without initially in fact this came from a guy at the weather channel because he was noticing this, keeping track of records on his own as a meteorologist. and i was down there, heidi invited me down to, and he said what's with his two to one ratio? i said i do know that he says is that some kind of a unique thing about climate change? i said i have no idea. he said let's look at it. it turns out this ratio, we just happen to be at about two to one right now, a decade ago it was a little less than two to one. a decade before it was a little less than that. if you had

meehl spoke about. our planet would warm at 8 degrees fahrenheit. he basically assumed that we would continue to emit fossil fuels at the 1895 rate and would take 3,000 years to double. but bert burrlean did his own back of the envelope calculation saying co2 would be increased by 30% by 2000 which was true. he figured out how tore this invisible greenhouse gas called carbon dioxide. we wouldn't need the panel if we could see carbon dioxide because it's everywhere. he figured out a way to create and build a machine like a breathizer and he showed just as burt calculated that we increased our co2 in the at atmosphere by 36% now. i know that that does not sound a lot, but because of the special chemical structure of carbon dioxide unlike nitrogen and oxygen which there is so much more of, they have just two at toms. co2 has three that allows it to absorb radiation and absorb heat why is why the planet is warming up. the other thing they did was chemically fingerprint the co0 to know it was us. they come in isotopes and fossil fuels. they have no c14 b