CAMBRIDGE, England -- When Ted Turner announced five years ago that he was giving $1 billion of his personal fortune to the United Nations, the idea was to disburse the money in grants at the rate of $100 million a year for 10 years. Then it would be over. The billion would be given. And the U.N. Foundation, which Turner set up to distribute the money, would presumably go out of business. Now it appears that the Atlanta businessman and CNN founder may have created something bigger. On Friday, the board of the U.N. Foundation, meeting in Cambridge, England, asked...