claim: With marine ice cliff instability, sea-level rise for the next century is potentially much larger than we thought it might be five or 10 years ago
evidence: According to the Fourth ( 2017 ) National Climate Assessment ( NCA ) of the United States it is very likely sea level will rise between 30 and 130 cm ( 1.0–4.3 feet ) in 2100 compared to the year 2000.