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ITALY - JANUARY 20:  Ancient painting of Florence. The burial place of Leonardo Da Vinci's Mona Lisa located in the Florence's former Convent of Saint Orsola now abandoned and derelict. An Italian art historian Giuseppe Pallanti found a death notice in the archives of a church in Florence that referred to "the wife of Francesco del Giocondo, deceased July 15, 1542, and buried at Sant'Orsola, where she spent her final days, at age 63." Lisa Gherardini, as Leonardo's model was called in real life, was the wife of Florentine tradesman Francesco del Giocondo. Sant'Orsola, now disused and in ruins, is near the San Lorenzo basilica at the heart of the Tuscan metropolis. Another researcher urged a search at the site for Lisa Gherardini's remains. "Thanks to modern techniques, scientists can determine her physical aspect, maybe even her face and thereby make an important contribution" to establishing her identity.  (Photo by Eric VANDEVILLE/Gamma-Rapho via Getty Images)

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The top of a water tower is seen at the Flint Water Plant in Flint, Michigan January 13, 2016.  Michigan National Guard members were set to arrive in Flint as soon as Wednesday to join door-to-door efforts to distribute bottled water and other supplies to residents coping with the city's crisis over lead-contaminated drinking water.     REUTERS/Rebecca Cook - RTX22AL4

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Home visits for new mothers helps baby brain development

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Scientists use 3-D printers to recreate largest dinosaur ever

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Vice President Joe Biden (L) points to U.S. President Barack Obama while Obama delivered his final State of the Union address to a joint session of Congress in Washington January 12, 2016. REUTERS/Evan Vucci/Pool  - RTX224W9

President announces national effort to cure cancer

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In his State of the Union address, President Barack Obama announced a new American initiative to cure cancer. Continue reading

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