WASHINGTON (AP) — A new scientific study says polar ice sheets in Greenland and Antarctica are now melting three times faster than they did in the 1990s. Researchers blame global warming.
So far, that's only added about half an inch to rising sea levels, not as bad as some earlier worst case scenarios. But scientists worry that the melting's pace has quickened, especially in Greenland.
Until now, researchers haven't agreed on how fast the mile-thick sheets are thawing — and if Antarctica was even losing ice.
Study lead author Andrew Shepherd says it is clear that Greenland's melting is a problem. The study was released Thursday by the journal Science.