Prevention strategies include filtering drinking water and discouraging people with Guinea worm from wading in water.

CNN: Rare tropical disease close to eradication

Combining news operations, as opposed to a full corporate merger, could skirt the classic obstacles the Comcast-NBC deal are now wading through, from FCC reviews and examination of antitrust issues to disgruntled shareholders and crushing debt taken on to pay for a deal.

FORBES: New Layoffs Coming to CBS News?

In wading into the debate, Congress joins a coalition of conservatives who say they are fighting to save Christmas from, say, shopkeepers who would offer discounts for the "holiday season" rather than for Christmas alone.

BBC: War on Christmas: Is the festival under attack?

The hundreds of experienced monitors from the Justice Department and observers from the Office of Personnel Management heading to the polls are trained for a sensitive mission: wading into sometimes tense and strongly partisan surroundings under intense scrutiny.

CNN: Federal observers and monitors heading to polls