On the Italian coast, in the central region of Tuscany, the seaside resort of Rosignano looks like a picture-postcard paradise with turquoise sea and shimmering white sand. But this landscape is a result of its close proximity to a large factory producing soda ash. For over a century, the Belgian chemical company Solvay has managed the site, with the authorisation to discharge up to 250,000 tons of waste – pumped directly onto the beach.