Author and journalist Isabel Wilkerson will discuss her book "The Warmth of Other Suns: The Epic Story of America’s Great Migration" at 7:30 p.m. Wednesday, Feb. 29, in North Central College’s theatre at Meiley-Swallow Hall, 31 S. Ellsworth St., Naperville. This event is free and open to the public. A Pulitzer Prize-winning journalist and bestselling author, Wilkerson spent 15 years interviewing more than 1,200 people to write her award-winning work of narrative nonfiction. It tells the story of three people who made the decision of their lives in what came to be known as the Great Migration, which lasted from 1915 to 1970.