Acid rain is eating the outdoor art of Venice. “Amputated arms, graffiti, and the black streaks caused by sulphur dioxide have marred the appearance of much Venetian sculpture, and everywhere there are examples such as Alessandro Vittoria’s statue of Saint Zaccaria on the central portal of the church, which remains faceless after its marble features disintegrated.” Some want to rescue the work by taking it inside and replacing it with copies. – The Art Newspaper