Darell Hammond is the founder and CEO of KaBOOM!, an innovative nonprofit based in Washington, D.C, that brings volunteers and community members together to build playgrounds for children across the country. Founded out of his apartment in 1996, KaBOOM! has raised $200 million, rallied a million volunteers, led the hands-on construction of 2,000 playgrounds, and inspired a movement for the child's right to play. Darell and his wife, Kate, live in Washington, D.C.