A study of sea-level trends brings both good and bad news to localities concerned with coastal inundation and flooding along the shores of Chesapeake Bay. Dr. John Boon, the study's lead author, says the good news is that "absolute sea level in Chesapeake Bay is rising only about half as fast as the global average rise rate." The bad news, says Boon, is that "local subsidence more than makes up for it."...