Michelle Nimmons (with the red shoe) poses with some of the students in her sex education program in Denmark, S.C. Courtesy of Michelle Nimmons hide caption

itoggle caption Courtesy of Michelle Nimmons

A boy waits to get vaccinated at an anti-polio campaign in Moradabad, India. Michaeleen Doucleff/NPR hide caption

itoggle caption Michaeleen Doucleff/NPR

Eight-year-old Manish, who caught polio years ago, learns to walk with leg braces at a rehabilitation center in New Delhi on Thursday. Manish Swarup/AP hide caption

itoggle caption Manish Swarup/AP

Indian schoolchildren wait in line for food at a government primary school in Hyderabad, India. Consistent access to nutritious food and clean water is key to helping children thrive, researchers say. Noah Seelam/AFP/Getty Images hide caption

itoggle caption Noah Seelam/AFP/Getty Images

Researchers say intervention in early childhood may help the developing brain compensate by rewiring to work around the trouble spots. iStockphoto hide caption

itoggle caption iStockphoto

Dalton Conley lives in New York City with his wife and two children. Stephen P. Hudner/Courtesy of Simon and Schuster hide caption

itoggle caption Stephen P. Hudner/Courtesy of Simon and Schuster