Climate.gov has a blog discussing topics related to El Nino, an oscillation which affects temperature and precipitation in parts of the Southeast, particularly in winter months when El Nino is usually strongest.  One of the research questions that comes up in studies of changing climate is whether El Nino will occur more frequently in the future, or if it will occur less often.  The blog discusses why that is a hard question to answer and why models do not agree on the future of El Nino, except that it will continue to occur.  You can read the story by clicking here.