Images released Tuesday show the extent of surface melt on
Greenland's ice sheet on July 8 (left) and July 12 (right).
Measurements from three satellites showed that on July 8, about
40 percent of the ice sheet had undergone thawing at or near the
surface. By July 12, 97 percent of the ice sheet surface had
thawed. Images released Tuesday show the extent of surface melt
on Greenland's ice sheet on July 8 (left) and July 12 (right).
Measurements from three satellites showed that on July 8, about
40 percent of the ice sheet had undergone thawing at or near the
surface. By July 12, 97 percent of the ice sheet surface had
thawed. AFP/Getty Images/NASA A pair of NASA satellite images
taken just four days apart tells a potentially worrying story of
melting ice in the polar summer. The first, snapped from orbit
on July 8, shows about 40 percent of the Greenland ice sheet
shaded in pink or red to illustrate probable or confirmed
surface melting. The second photo, taken on July 12, shows
nearly the entire land mass —