For centuries, art historians have debated over the landscape in Leonardo da Vinci's “Mona Lisa.“ But the geologist and Italian Renaissance scholar, Ann Pizzorusso, says she knows the location that features in the world's most famous portrait. » Subscribe to NBC News: NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features , , , Nightly News, Meet the Press, Dateline, and the existing apps and digital extensions of these respective properties. We deliver the best in breaking news, live video coverage, original journalism and segments from your favorite NBC News Shows. Connect with NBC News Online! Breaking News Alerts: Visit : Find NBC News on Facebook:
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