Update: The original version of this story incorrectly summarized this study as showing populations to be displaced by 2100 if current trends continue. Author Ben Strauss sent the following correction: "by 2100, we would most likely be *locked in* to such an outcome in a more distant future, time unspecified, but essentially inevitable." We have updated the story accordingly.
The warming climate is causing sea levels to rise as oceans expand, and, combined with more frequent storms, the effects could be devastating.
A new map shows more than 1,400 towns in the U.S., 30 in Washington state, where half the population will be displaced if current trends continue through the end of this century.