National Geographic : 2011 Mar
CHANGING SEAS Rosignano Solvay, Italy Photograph by MASSIMO VITALI A Tuscan beach captures the textured drama of humans and the sea. The "tropical" sands aren't natural; they're whitened by carbonates from the chemical plant, which also discharged mercury until recently. The plant converts salt extracted from the sea into chlorine and other essential products. Fossil fuels power such transforma- tions; worldwide, the CO from smokestacks and tailpipes is slowly acidifying the ocean, threatening marine life.