美国国家地理一直孜孜不倦地追求着最完美品质，他们的标志性黄框框已经成为一种品质的象征，他们的摄影师拍摄的自然灾害方面的图片也让人叹为惊止。在华夏地理上看到2007年美国全球摄影大赛结果评选结果，我本想去NG网上看看这些原图，却发现了以下一些好的图片，不敢独享，共享之。请有兴趣者自行下载。
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Cascades of snow, ice, and rock that can clear a mountainside.
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Our planet produces thousands of earthquakes a day.
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Tropical disturbances capable of substantial destruction.
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A potentially dangerous high-voltage discharge and flash.
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Storms that can pack the highest winds on Earth.
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Massive and destructive waves or tides haunting shores.
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Volcanoes are awesome manifestations of the fiery power contained deep within the Earth.
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Discover how a single spark can ignite an inferno that lasts for weeks.
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