The Secret Behind Mona Lisa's Smile

Da Vinci deftly captures the bittersweet honesty of a woman following a literal rebirth. I believe this is no small coincidence.

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The secret of Mona Lisa's smile revealed!

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Mona Lisa's smile: The mystery has finally been solved after 500 years, The Independent

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The Secrets Behind Mona Lisa's Smile

Hidden portrait 'found under Mona Lisa', says French scientist - BBC News