It has been said that the frozen parts of our planet, also known as the cryosphere, may be the proverbial 'canary in the coal mine' when it comes to climate change. This video shows some of the most dramatic fluctuations to our cryosphere in recent years using visuals created with a variety of satellite-based data. Read more about and download this video: http://svs.gsfc.nasa.gov/goto?3619 Want more? Subscribe to NASA on iTunes! http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=283424434 Or get tweeted by NASA: http://twitter.com/NASAGoddard
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