What could make a baby bison white?

Photos of a white bison calf in Yellowstone National Park have generated excitement as well as questions: How does that happen?

Raw sewage pumped into England's largest lake due to fault

Raw sewage was released into Windermere, England's largest and best-known lake, over a 10-hour period after a fault caused pumps to stop working, according to documents seen by the BBC and reported Wednesday.

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