Couple pledge $20 million to South Dakota Community Foundation

Paul and Muffy Christen made a $20 million bequest to the South Dakota Community Foundation, which will provide the nonprofit agency with an estimated $562,000 per year in interest earnings to give to charities statewide.

The donation takes three parts. A quarter of it will be a donation to the South Dakota Fund, which makes unrestricted donations throughout the state. That $5 million grant is a "challenge grant," taking effect only when the foundation raises another $5 million to match it, for a total increase of $10 million.