The Yangtze River in China has mysteriously turned red9/8/2012
It was your average day at a port in China yesterday — fisherman fished, tourist toured, the river mysteriously turned red. Authorities are puzzling over why the Yangtze — China's largest and longest river — looks more like a scene from an apocalyptic sci-fi movie than a bustling port. The river reportedly began turning bizarre shades of crimson yesterday near the city of Chongqing, sending residents swarming to its banks in bewilderment. Some people bottled samples of the ruby-colored fluid while fishermen, apparently too reliant on their trade to pause, went about business as usual. Paired with Zhengzhou's recent rainbow-colored sewers, Chinese officials are going to need a force dedicated just to weird water mysteries. [Source]
Why do you think the river turned red?