A worker pumps blue-green algae into a treatment reservoir at Chaohu Lake in Hefei, Anhui province July 23, 2012. The local environment protection department implemented machines to pump the algae from the lake to a treatment reservoir where it would be decontaminated and recycled, which was the latest solution to fight off blue-green algae on the Chaohu Lake. The new method is able to deal with almost a thousand tonnes of blue-green algae every day, according to local media. [Photo/Agencies]

A worker rows a boat in Chaohu Lake, filled with blue-green algae, in Hefei, Anhui province July 23, 2012. [Photo/Agencies]