EARTH & US: THE SCALE OF CHANGE
Three major publications on climate have come my way in the last week. Each is sobering. Together, they feel apocalyptic:
1. New cloud modeling suggests that warming by 2100 is likely to be 4 degrees C rather than 2. (And that, of course is just the part that will have happened by then of an already committed much larger change -- all of Greenland's ice and most of Antarctica's gone within a few more centuries.)
2. The shutting down of ocean circulation because of the diminishing temperature differential between the equator and the poles: a 30% decline in bottom life in the North Atlantic by 2100. (And the end point, of course with further CO2 is anoxia for most of the oceans, a great reduction in atmospheric O2 and a surge of H2S -- the mechanism that caused all but one of earth great extinctions.)
3. A major Nature article suggesting that we have reached the limits of increased productivity from industrialized agriculture, and that decline has already begun -- just as we need to double food production over the next five decades or so. (I'm inclined to believe that genetic engineering may well buffer another few decades, but no more.)
As we arrive at 2014, how does the scale and import of all of this figure in the decisions we will each make over the rest of our lives, knowing that, every day, we are the biggest beneficiaries of the status quo, and are deciding the fate of lots and lots more of life than just us?