Flooding of Coast, Caused by Global Warming, Has Already Begun Scientists’ warnings that the rise of the sea would eventually imperil the United States’ coastline are no longer theoretical. http://www.nytimes.com/2016/09/04/science/flooding-of-coast-caused-by-global-warming-has-already-begun.html?rref=collection%2Fsectioncollection%2Fscience