点击这里观看更多视频: 美国国家航空航天局的空中雪观测站收集的数据可以帮助改善全球15亿人的水资源管理,这些人依靠融雪来供水。这段视频在美国宇航局科学直播节目《庆祝地球日的奇异世界》第三集现场直播。

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