|Save the Baltic Sea|In: Nature: International Weekly Journal of Science. Nature Publishing Group: London. ISSN 0028-0836; e-ISSN 1476-4687, meer
The Baltic Sea holds the world's largest human-induced dead zone: a body of water that has all the symptoms of nutrient overload and oxygen deprivation. Dumping from sewage-treatment plants, farming and industry has poured about 20 million tonnes of nitrogen and 2 million tonnes of phosphorus into the Baltic over the past 50 years, spurring algal blooms.