Europa's frozen, fissured surface, seen here in a colorized mosaic image from the Galileo spacecraft, hides a liquid ocean that may hold all the ingredients needed for life. Three key ingredients ...
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Desert oasis — part of 4,000-year-old settlement — explored in Saudi Arabia. See itA site within the Khaybar Oasis wrapped up excavations earlier ... Hoping to get a better look, researchers turned to geographic information systems, or GIS, as a way to map the site using high ...
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