Melting Ice Threatens Sea-Level Rise By RANDOLPH E. SCHMID, Associated Press Writer 19 minutes ago WASHINGTON - The Earth is already shaking beneath melting ice as rising temperatures threaten to shrink polar glaciers and raise sea levels around the world. By the end of this century, Arctic readings could rise to levels not seen in 130,000 years — when the oceans were several feet higher than now, according to new research appearing in Friday's issue of the journal Science. Even now, giant glaciers lubricated by melting water have begun causing earthquakes in Greenland as they lurch toward the ocean, other...