1. China's longest river, the Yangtze, suddenly turns into a blood red color. Officials said they do not know why this is happening.
Red river water is reported to occur in Chongqing, which is the largest industrial center in southwestern China. However, the same phenomenon is also found in some other point.
Local environmental officials suspect industrial pollution and silt brought by the recent flooding as the cause of the Yangtze River blush. However, this has yet to be ascertained.
Emily Stanley, professor of limnology (the study of fresh waters) at the University of Wisconsin, said, "When the water turns red, which is considered by most people is the red tide. However, the algae that causes red tide in the sea of life, instead of fresh water, so it is not possible this is related to the phenomenon.
Occasional fresh water can indeed turn red because of biological reasons. Example, in Texas lake turns red in the summer of last year. However, it is most often caused by bacteria that produce color in the water the less oxygen conditions. Because the river continues to flow and stirring experience, the rare condition of oxygen deficiency.
After reviewing some pictures river in Chongqing is red, Stanley drew the conclusion that this is the impact of human activities.
"It seems this phenomenon pollutants. Rapid water turn red in the past because people have been throwing dye into it," said Stanley.
Last December, dyes also cause changes in other rivers in China, Jian, a deep red. Known, there is an illegal factory producing dye for firework wrappers.
Stanley said the red mud can indeed cause discoloration river. However, if it happens, then the Yangtze River will be filled with mud. He believes this time the color change is caused by human activity.
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