Re: @Penguin herder
>>So how are you responding at the moment?
Politically, which is what this is all about. If you want to get scientific, I can start spouting about the signal processing involved in turning mud cores into some of the results I discussed, but the politics is really the key to this.
>>"The Earth has been far warmer in the past than it is now and plants apparently liked it."
"Do you honestly think that's news to climate scientists (or biologists), or that they knew it but somehow none of them managed to grasp the significance of it?"
They are IGNORING the significance of it. One might call it An Inconvenient Truth from their perspective. Fraud.
"I'd rather taken the impression that the issue wasn't about whether plants as a whole would survive any possible changes, but whether any changes might be hard (and/or expensive) for humans to comfortably deal with."
Given that plants ultimately power the entire biosphere (and recycle the CO2 that we produce in the process), their well being is critical. More plants, more food. If you want a problem to consider, look forward to the next ice age.