WHO DO YOU THINK YOU ARE?, BBC Knowledge, 8.30pm
BRITISH artist Tracey Emin has been shocking the world for 20 years with works based on her personal life. ‘‘ Because I work constantly going back to my own past, I thought it might be interesting to see where my past came from, but now I’m really nervous about it,’’ Emin says. She won’t have children; she is the end of her line. The last thing she wants to find out is that her ancestors were boring.