Are you a print subscriber? Activate your account. By Ad Age Staff - 37 min 40 sec ago 2 hours 35 min ago By Adrianne Pasquarelli - 3 hours 25 min ago 6 hours 35 min ago By Ewan Larkin - 9 hours 7 ...

LECCO, Italy, May 15 (Reuters) - Over 500 years after Leonardo da Vinci painted the Mona Lisa, an academic believes she has unravelled the mystery about the backdrop to one of the world's most ...