With millions of people worldwide still unable to read and write, we examine the challenge of global literacy. what are the challenges facing UNESCO? Why are so many people still unable to read and write? And what can be done to educate girls and women across the world? Inside Story, with presenter Shiulie Ghosh, is joined by guests: Jordan Naidoo, a senior adviser on education for the UN children's charity UNICEF, and Kabir Haqmal, the director of Information and spokesman for Afghanistan's minister of education.