Not that they really wanted to be so generous, mind you…but in the printed (IHT) version of this long article about the Keelings and CO2 concentration measurements, somebody at the NYT decided to include this graph:
And so millions around the world will be able to see that temperatures have gone up and down in the past 400,000 years, with a characteristic shape (sharp increase with an even more marked peak, slow decline, then sharp increase again) that is currently being replicated (and the top temperatures of the past haven’t been reached yet). The usual reply is that in the past it’s been changes in the Earth’s orbit what drove the temperature changes: and yet, even if CO2 is the “culprit” this time there is evidently something in the Earth’s climate that:
- Keeps temperatures from going unimaginably high
- Counteracts the warming, whatever the CO2 concentrations
- Mantains temperatures on average as much colder than at present
In the medium and long run, humanity should be preparing for a cooler world. Preparation means of course adaptation, the one thing nobody wants to do.