Bill Gates talks to World Class schools
Bill Gates, the founder of Microsoft and the Gates Foundation, fields questions from school pupils around the world on World Service radio discussion programme World Have Your Say.
Mr Gates was at a school in London and linked up with students to discuss global issues.
Every year Bill Gates releases a letter detailing his plans for The Bill and Melinda Gates Foundation.
This year, pupils also wrote letters to change the world. Themes included discrimination, technology, disability and poverty. Aboveall, young people emphasised the importance of access to education.
World Class schools in Russia, Kenya, and Libya took part in the radio broadcast along with pupils from Deptford Green School and their partner school in Uganda. The schools in Russia and Kenya have former pupils aiming to compete at London 2012.