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Took a long journey to hawaii and up an old volcano. at the summit lies a forest of instruments. one of them has measured carbon dioxide since 1958. by coincidence, that's the year i was born. so, during my lifetime, levels of this key gas have just kept rising. the most striking thing that i see in the c02 records since 1958 is that the concentration in the atmosphere has gone up every single year. so, where would this lead us? the early computer models couldn't be sure. there were lots of uncertainties, but the scenarios were already looking scary. the arctic was the hot spot, heating up muc...

A forest of instruments. one of them has measured carbon dioxide since 1958. by coincidence, that's the year i was born. so, during my lifetime, levels of this key gas have just kept rising. the most striking thing that i see in the c02 records since 1958 is that the concentration in the atmosphere has gone up every single year. so, where would this lead us? the early computer models couldn't be sure. there were lots of uncertainties, but the scenarios were already looking scary. the arctic was the hot spot, heating up much faster than the rest of the planet, and i was to return to it many tim...

Of the climate, trapping carbon dioxide year after year, so we can see how it's risen and fallen. but the next step is working out our role in that, the human fingerprint on global warming, and that involves more recent data. getting to it took a long journey to hawaii and up an old volcano. at the summit lies a forest of instruments. one of them has measured carbon dioxide since 1958. by coincidence, that's the year i was born. so, during my lifetime, levels of this key gas have just kept rising. the most striking thing that i see in the c02 records since 1958 is that the concentration in the...

Get into it took a long journey to hawaii, get to it took a long journey to hawaii, and up an old volcano. at the summit lies a forest of instruments. one of them has measured carbon dioxide since 1958. by coincidence, that's the year i was born. so, during my lifetime, levels of this key gas have just kept rising. the most striking thing that i see in the c02 records since 1958 is that the concentration in the atmosphere has gone up every single year. so, where would this lead us? the early computer models couldn't be sure. there were lots of uncertainties, but the scenarios were already look...

Analyse the air inside them. the ice holds a record of the climate, trapping carbon dioxide a year after year so we can see how it has risen and fallen. but the next step is working out our role in that, the human fingerprint on global warming, and that involves more recent data. get into it took a long journey to hawaii, and up an old volcano. at the summit lies a forest of instruments. one of them has measured carbon dioxide since 1958. by measured carbon dioxide since 1958. by coincidence, that is the year i was born. so, during my lifetime, levels of this key gas have just kept rising. we ...