Scientists are finding that the rate of sea-levelrise is increasing as well.
科学家们还发现海平面上升的速率同样在加快。
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The biggest problem to the world is rising sea levels, glaciers are responsible for 21% of sealevelrise.
世界上最大的问题是海平面上升，冰川造成了21%的海平面上升。
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Mark Serreze, director of the American National Snow and Ice Data Center (NSIDC) in Colorado, thinks that sealevelrise is going to be a bigger and bigger problem, as we move through the 21st century.