Google launches an updated version of Google Earth that includes oceanic 3D underwater terrain as well as historical imagery. With this new addition to the software, you can spot shipwrecks as you wander the ocean floor. As you cruise around, you can also view videos and stills from content partners like National Geographic and videos from the archives of Jacques Cousteau. Another new feature in 5.0 is historical imagery: By activating a time slider, it's possible to see newer and older satellite imagery from around the globe.

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