I've just stumbled across an exciting new (to me at least) section of the NASA web site. It's called Worldview, and it does what it says on the tin. It's part of NASA's Earth Observing System Data and Information System (EOSDIS for short), and it gives you a satellite's view of planet Earth a bit like Google Earth, except that it's updated on a daily basis! To give you some idea of the power of Worldview, and also an insight into why I was wandering the virtual corridors of NASA late last night, here's a "close up" image of Cape Morris Jesup, the most northerly point in Greenland, taken on March 18th 2013:

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