this is probably nothing to worry about (cont'd)

Arctic icemelt a rising danger
Disintegrating Greenland glaciers an accelerating coastal threat

One of the world’s largest masses of ice could melt much faster than predicted, says a new study that warns the steady loss of the Greenland ice sheet could raise sea levels three times higher than estimated.
. . .

Carlson says that if the Greenland sheet completely disappeared, it would raise sea levels by seven metres, adding that even the slightest increases could threaten hundreds of millions of people in coastal communities.

"The word ’glacial’ used to imply that something was very slow," co-author Allegra LeGrande of the New York-based NASA Goddard Institute for Space Studies wrote in the report. "This new evidence . . . indicates that ’glacial’ is anything but slow.