ScienceDaily: New research confirms that the land under the Chesapeake Bay is sinking rapidly and projects that Washington, D.C., could drop by six or more inches in the next century--adding to the problems of sea-level rise. This falling land will exacerbate the flooding that the nation's capital faces from rising ocean waters due to a warming climate and melting ice sheets--accelerating the threat to the region's monuments, roads, wildlife refuges, and military installations. For sixty years, tide gauges have...