New study in Nature Communications shows sea levels along the U.S. Southeast and Gulf coasts have been rapidly accelerating, reaching record-breaking rates over the past 12 years. In the study, Tulane University researchers detected rates of sea-level rise of about a half an inch per year since 2010 — three times higher than the global average over the same period. They attribute the acceleration to the compounding effects of man-made climate change and natural climate variability.