The human preoccupation with sex is nothing new – but the internet has made it so much easier to explore and exploit every shade of desire. The online porn industry makes billions of dollars in profit every year, but the big winners are corporate players, not the women and men performing the sex acts. Stephen Sackur interviews Mia Khalifa; she was briefly a porn actress, garnering worldwide notoriety when she appeared in a sex video wearing the Islamic hijab. After years of threats and insecurity, she’s speaking out; what does her story tells us about the porn industry and 21st century culture?