The estimates from the National Research Council, taking advantage of more recent research, range from 19 to 55 inches. The study is expected to become a common frame of reference that coastal communities can use in planning.
As the world continues to seek out new energy sources, the Arctic Ocean is becoming a hot bed of activity. The US must ratify the UN Convention on the Law of the Sea in order to secure exclusivity rights to the lucrative area.
Arctic monitoring stations show carbon dioxide levels are now above 400 parts per million. Carbon dioxide is the chief climate-change gas and stays in the atmosphere for 100 years. Before the Industrial Age, carbon dioxide levels were 275 ppm.
The number of cops killed on the beat had been declining since the 1970s and was bound to end, say experts. But the killing of cops in Modesto, Calif., and Greenland, N.H., Thursday could point to other trends.