EcoWatch: Global warming of 4C above pre-industrial levels would raise sea levels by nearly nine meters, enough to submerge land currently home to more than half a billion people worldwide. This comes from a new report by Climate Central, looking at what it would mean for different parts of the world if we continue to emit greenhouse gases at the speed we currently are. This is a middle estimate for 4Cthe amount of sea level rise that level of warming would lock us into could be high as 10.8 meters or as...