evidence: The Arctic is warming more rapidly than other regions. For example, while Earth’s average temperature has increased by one degree Fahrenheit over the past century, air temperature in Greenland has increased by about seven degrees Fahrenheit since 1991. Because warming is more rapid in the Arctic, the impacts are much more pronounced. [...] Earth’s warming climate means that overall Greenland loses more ice than it gains each year. Warmer temperatures mean more melt days. During summer, temperatures are warm enough for ice on the surface of the Greenland ice sheet to melt in many places. Warmer temperatures have lead to more days of melting ice. Areas losing the most ice are located in southern Greenland and along the margin of the ice sheet. Greenland is currently losing 234 billion tons of ice per year. That's enough ice to pack into 6,324 Empire State Buildings. Ice is melting seven times faster now than it was in the 1990s.