Retreating sea ice is reducing habitat for vulnerable Arctic species.
由于海冰减退，北极脆弱物种的生境正在缩小。
But in recent years, dozens - possibly hundreds - of bears are becoming stranded on the coastal plain because they cannot reach the retreating sea ice.
但近年来，几十-可能成百-的北极熊够不着正在消退的海上冰块，只得在沿海平原上滞留。
Scientists found that coastal erosion caused by retreating sea ice is damaging remains in an Inuit village in Alaska, including a fourth-century coastal cemetery.
科学家们还发现，受到侵蚀的海岸线已经威胁到了生活在阿拉斯加的因纽特人村庄，其中还有年久的沿海墓地遗迹。
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