As part of the metamorphosis from private foundation to public charity, the Pew Charitable Trusts are pulling their major polling, research and information projects into a single organization to save on administrative costs. Last November, the directors of the trusts, together one of the nation's 10 largest foundations, decided to become a public charity, giving it more flexibility to raise money, lobby and contribute to other organizations, as well as tax advantages. Another benefit is that Pew, based in Philadelphia, can combine programs under one roof, rather than pay other groups to run them. Pew is to announce today that...