Will Allen, CEO of Growing Power, Inc., speaks to first-graders next to Mary Hines of Winnetka at North Shore Country Day School in Winnetka. Allen, an urban agriculturalist, is the Harold H. Hines, Jr. Visiting Fellow. | Ryan Pagelow~Sun-Times Media

Growing Power, Inc. CEO Will Allen, an urban agriculturalist, spoke to fourth and fifth-graders at North Shore Country Day School in Winnetka about his projects. | Ryan Pagelow~Sun-Times Media

Growing Power, Inc. CEO Will Allen, an urban agriculturalist, spoke to students at North Shore Country Day School in Winnetka about his projects. | Ryan Pagelow~Sun-Times Media

Growing Power, Inc. CEO Will Allen, an urban agriculturalist, spoke to students at North Shore Country Day School in Winnetka about his projects. | Ryan Pagelow~Sun-Times Media

Mary Hines of Winnetka visited North Shore Country Day School in Winnetka. The school's Harold H. Hines, Jr. Visiting Fellowship is an annual event in memory of longtime Board of Trustees member Harold Hines. | Ryan Pagelow~Sun-Times Media

First-graders Sofia Sommer (left) and Carissa Schultz listen to Growing Power, Inc. CEO Will Allen, an urban agriculturalist, speak at North Shore Country Day School in Winnetka. | Ryan Pagelow~Sun-Times Media

Seniors (from left) Floris Hondmann, Gagan Bhambra, Ilia Labkovsky and Ayo Okesanya listen to Growing Power, Inc. CEO Will Allen, an urban agriculturalist, speak at North Shore Country Day School in Winnetka. | Ryan Pagelow~Sun-Times Media

Will Allen, CEO of Growing Power, Inc., speaks to first graders next to Mary Hines of Winnetka at North Shore Country Day School in Winnetka. Allen, an urban agriculturalist, is the Harold H. Hines, Jr. Visiting Fellow. First graders Sofia Sommer and Cari