China has installed the first major offshore wind farm outside of Europe. + Image In China, most offshore wind farms likely will be built in intertidal areas. Located in the East China Sea, near Shanghai, the 102-MW Donghai Bridge Wind Farm began transmitting power to the national grid in July. The farm, which is slated to expand in the coming years, eventually will generate annually 267 million kilowatt-hours of electricity—enough to power 200,000 Shanghai households. It currently is supplying power to the Shanghai Expo and serving as a showcase project at the five-month-long international event. The $337-million Donghai Bridge farm
The 2016 Summer Olympics boating and swimming events have put an international spotlight on what has been a long-running problem in Rio de Janeiro—untreated sewage and trash are clogging up major bays and waterways.