Sea levels on Earth are rising several times faster than they have in the past 2,800 years and are accelerating.20160223_Rutgers__sea-level_rise_is_fastest_in_2_800_years
Couple this with two facts:
1. ACCELERATING PHENOMENA ARE INHERENTLY UNPREDICTABLE.
2. A species that evolved to prioritize short-term threats is pretty much doomed to ignore a long-term threat until it is too late.
"...and I'm just gettin warmed up!" -- Mother Nature
... "The era of procrastination, of half-measures, of soothing and baffling expedients, of delays, is coming to a close. In its place, we are entering a period of consequences." - Winston Churchill, The Gathering Storm