The most comprehensive and detailed topographic map ever made of Earth has been completed. The elevation data just released cover areas that have never been mapped in three dimensions before, and should be useful in predicting the effects of climate change and sea-level rise.
The Shuttle Radar Topography Mission is a collaboration between NASA, the US National Geospatial-Intelligence Agency and the German and Italian space agencies. It uses a technique called radar interferometry, which combines images taken at slightly different locations to produce a single three-dimensional image.
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