The river that DID run red:
Residents of Chinese city left baffled after Yangtze turns scarlet
The Yangtze river, which runs through the city of Chongqing in south-western China, turned a bright shade of orange-red yesterday. The waterway where the Yangtze met the Jialin River provided a fascinating contrast as the red started to filter into the other river. Officials are investigating the cause of the colouring.