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By Nina Chestney LONDON (Reuters) - An ancient lake hidden deep beneath West Antarctica's Ice Sheet may reveal vital clues about climate change and future sea level rises, and uncover new forms of life, according to a group of UK engineers and scientist. [More]

Perhaps one of Leonardo da Vinci's greatest paintings has never been reprinted in books of his art. Known as the "Battle of Anghiari," it was abandoned and then lost—until a determined Italian engineer gave the art world hope that it still existed, and a physicist from the U.S. Department of Energy's Argonne National Laboratory developed a technique that may reveal it to the world once again.