Dr. Chaim Lotem said the hole, measuring 1 to 2 millimeters, is a minor birth defect found in 15 percent to 25 percent of people.

CNN: Sharon heart operation set for Thursday

On Thursday I reported from the CEH on the latest findings about how much water has soaked into the ground - and saw a bore-hole used for measuring water levels actually spouting out water because the ground was so saturated.

BBC: Predicting the next big flood

Apparently the string of logging tools, each one measuring something different, needs some room to take their readings so the "rat hole" has to extend below the measured area.

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