re: #138 Jimash

” It should not be hard to imagine that the Earth is in some sort of dynamic equilibrium in terms of how much ice it has.”

Not hard to imagine.
Just incredibly wrong.
You do not know what the normal amount of ice on the Earth is.
For millions of years the Earth has fluxed between Ice Ages and warm periods.
It is not warmer now than any of the previous warm periods, predictions of inexorable warming are busted, and the entire concept plays on the fact that any further Ice Ages , though possible, are unimaginable.
Imagine that.

Dare I to say that everything you say has been falsified in a recent publication in science. I quote the abstract:

Coupling of CO2 and Ice Sheet Stability Over Major Climate Transitions of the Last 20 Million Years

The CO2 content of the atmosphere has varied cyclically between ~180 and ~280 ppmv over the last 800,000 years, closely coupled with temperature and sea level. For earlier periods in Earth’s history, pCO2 is much less certain and the relationship between pCO2 and climate remains poorly constrained. We use boron/calcium ratios in foraminifera to estimate pCO2 during major climate transitions of the last 20 million years (myr). During the Middle Miocene, when temperatures were ~3 to 6C warmer and sea level 25 to 40 meters higher than present, pCO2 was similar to modern levels. Decreases in pCO2 were synchronous with major episodes of glacial expansion during the Middle Miocene (~14 to 10 million years ago; Ma) and Late Pliocene (~3.3 to -2.4 Ma)

sciencemag.org

If you’re really very interested I can send you the pdf of the article.

Ontopic, the speech was amazing and it reflected incredibly well the frustrations Israeli people (at least the ones I met during my visit) had with international press etc.