The rate of Greenland's ice cap melt has turned out to be 20% greater than previous estimates for recent decades, and that spells global trouble. Several new studies confirm this ice mass loss, increasing the rate of sea level rises and the more common coastal flooding both with storms and monthly high tides. In addition, all this freshwater is diluting the salinity of the N Atlantic, raising the risk of a shutdown of the Gulf Stream, as has occurred several times in the Earth's history, with drastic consequences.