Before the last ice age, during a warm era some 125,000 years ago that was comparable to modern times, scientists know that the oceans reached levels that were some 15 to 20 feet higher than they are today. What they don't know is, where did the extra water come from?
Many have been assuming that it came from the melting Greenland ice sheet, but a new study points in the opposite direction -- to West Antarctica -- a circumstance that one researcher describes as "quite scary."
In a warming climate, questions about how ice sheets melt and how fast and how high sea levels rise are hot research topics.
Read More: http://news.discovery.com/earth/a-scary-new-look-at-rising-seas-and-falling-ice-sheets-110728.html
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