The merits of using a cooling system which uses renewable energy to operate are already being felt by sites that use them. The world’s most visited museum, the Louvre, has benefited from the ...

PARIS (AP) — 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 ...

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 the ...