Total collapse of vulnerable parts of West Antarctica’s ice sheets would raise sea levels by at least 3 metres. The possibility of this happening has now moved from the hypothetical to an unfortunate reality. The best we can now hope for is that this collapse will be slow and stately, and take centuries to unfold…Given we’ve made so little progress on limiting our global carbon emissions, odds are that ice-sheet collapse will only accelerate. Those of us who study climate history are confident that once this sort of collapse begins, it will not stop. If not, then we’re witnessing beginning of destruction of $Trillions worth of coastal infrastructure. You can be sure the insurance industry is paying attention. How long will it be before property less than 5 metres above sea level is uninsurable?