The tsunami looms: By 2050, nearly 90 million Americans will have passed age 65, and every corner of society will feel the impact. With our inadequate health-care workforce, outmoded retirement ideas and rigid housing policies, how can our country prepare? Beyond rethinking ways to ensure retirement savings (mandatory government savings plans?) and redefining retirement (phased retirements? working longer?), researchers and professionals are trying out, and in some cases reviving, some ideas.