CAMBRIDGE, England, Jan. 14 (UPI) -- One of Antarctica's largest glaciers is in a headlong, self-sustaining retreat that could be irreversible even if the climate turns colder, scientists say.
That's the conclusion of three research teams that have modeled the behavior of the continent's Pine Island Glacier, or PIG, which at 60,000 square miles contains almost 20 percent of the ice flowing from Antarctica into the ocean.