CNet: Google Earth upped the cartographic ante again today with Google Earth 5 for Windows and Mac. As CNET News reported back in April 2008, the latest version incorporates even more data from NASA, the BBC, National Geographic, and other proprietary sources to create one of the most unique map offerings ever, meshing comprehensive real-time data on Earth's surface with information on the oceans, the stars that we see, historical maps, and topographical information on Mars.