Dozens of experts have studied the Mona Lisa to determine the scientific ... At the time when he was perfecting Lisa’s smile, Leonardo was spending his nights in the depths of the morgue under the ...

The Mona Lisa may maintain her famously enigmatic smile because she benefits from one of Paris’ best-kept secrets: An underground cooling system that’s helped the Louvre cope with the ...

PARIS — The Mona Lisa may maintain her famously enigmatic smile because she benefits from one of Paris’ best-kept secrets: An underground cooling system that’s helped the Louvre cope with ...