The number of Minnesotans over 65 will more than double in the next two decades, reaching nearly one quarter of the state's population and bringing dramatic changes to schools, churches, sports leagues and other institutions.

The Twilight Zone is an occasional series by Star Tribune reporters exploring the ways this "silver tsunami" will change Minnesota.

July 18: Look to Roseville for a glimpse of our graying future.

Aug. 2: Helping seniors stay at home.

Aug. 22: Aging boomers will strain family caregivers and state budgets.

Sept. 21: End of an era for young suburbs.

Today: Who will support public schools?