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Mysterious brown foam prompts testing at Lake Mead

Associated Press
Mysterious brown foam prompts testing at Lake Mead

The hills and islands at Echo Bay glow in the light from the setting sun at Lake Mead National Recreation Area, Monday, June 10, 2013, near Overton, Nev. Authorities are warning people to avoid the Overton Arm section of Lake Mead after park officials found dead carp and a mysterious foam there. The foam appeared to be coming from the mouth of the Virgin River and stretched about eight miles down to Echo Bay. (AP Photo/Julie Jacobson)

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