I was delighted to read in the paper that the well-known BBC broadcaster John Humphrys has a secret talent (well, not now)  for water divining. In his case he needed to find where a plough had cut through a water pipe outside his farm in Wales. According to him, the man on the plough handed him a bent coat hanger and told him what to do. He said he felt a total fool walking up and down this...

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