Artist Olafur Eliasson may soon have tree blood on his hands – the Brooklyn Bridge waterfall installation is kicking up such a salty spray that downwind trees are turning brown and “looking as if it's November,” the Post reports. The saltwater is interfering with their photosynthesis, and the owner of the River Café, which has gardens just south of the bridge, is worried that the trees he planted over three decades ago are suffering too much for public art. The Parks Department agrees they're “showing signs of stress,” and the Public Art Fund, which is producing the NYC Waterfalls, has hired a tree service to try and save them.