This week: The greatest gymnast in the world, Simone Biles, answers questions from you. Also this week: There are more young people in Brazilian jails than anywhere else in Latin America - what's being done to turn around the lives of teenage girls in prison? Plus, we ask: why aren't cigarettes illegal? BBC My World is a new show for young people around the world, brought to you by executive producers Angelina Jolie and the BBC World Service. We've also partnered with Microsoft Education and BBC Learning to show you how the news is made, fact-check stories and spot fake news. Subscribe to #BBCMyWorld here: null #simonebiles #bbcworldservice #angelinajolie