Mrs. Green talks with Mal Warwick - author, impact investor, and activist who reviews books on his blog and is one of three partners in the One World Play Project, a social enterprise he helped establish in Berkeley, California. One World Futbol manufactures and distributes a virtually indestructible soccer ball that never goes flat. The company distributed more than 1,500,000 balls during its first five years, bringing the joy of play to over 45 million disadvantaged children in more than 175 countries.