Notwithstanding our horror-movie headline, this is a serious issue. "These tiny invaders" - bacteria, fungi, even algae - "have wrought catastrophic damage on historic sites like the Lascaux cave paintings in France and the Titanic - [which] is being devoured by a tenacious species of metal-hungry bacteria. That's why scientists and conservators are working to identify what kinds of bacteria are colonizing an artifact, purge them, and make sure they cannot return. Some are even enlisting bacteria to help protect historic sites." (The good guys germs to the rescue!)
Article source here:Arts Journal
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