International resiliency trainer Andrew Zolli will speak April 25 as part of the Tomorrow Plan speaker series. His visit is part of a follow-up to a meeting last summer among 150 executive directors of nonprofit organizations, board members and corporate partners who talked about navigating through changing times. After the noon appearance at the State Historical Building, an afternoon workshop titled “The Agile Turn: Fostering Resilience in People, Organizations and Systems” will be held at Des Moines University. Both events are free and open to the public, but space is limited and registration is required. Zolli is author of “Resilience: Why Things Bounce Back” and an adviser to governments, organizations and companies such as Nike and General Electric.