James Hansen said in his book Storms for my Grandchildren that if we burnt all the available coal, tars, and oil then the ‘Venus Syndrome’ would be a dead certainty, extinguishing life as we know it on the planet. He has now thought further and says that is not going to happen, the time-scales make it impossible. It would take 100 million years to get enough carbon into the atmosphere, and by that time much of it would be back on the sea floor.
However we are on a path to make living at low latitudes impossible, plus more than half the major cities in the world cling to the coastline and are subject to sea level rise. The world, he says, would become ungovernable.
How likely is this? The short answer is that we appear to be on a path to achieve an ungovernable world within a century. Continue reading Climate change: the end of civilisation as we know it