主播大秀

Some 29 million may find themselves enslaved today - from those in bonded labour to others trafficked into sexual slavery. We hear one woman's tragic tale and look at some ingenious business and technological solutions. Dr Kevin Montgomery of Stanford University describes his new global mapping platform Collaborate.Org, which is allowing all kinds of law-enforcement agencies and charities to better coordinate the hunt for those who have gone missing. Hugh Bradlow of the Australian telecoms firm, Telstra, describes his efforts to organise a globalised phone system providing a single emergency number and a worldwide helpline. And Andrew Wallis of the UK charity Unseen, describes work on new laws to encourage multi-national firms to clean up their supply chains - the hidden source of much of the world's slave labour.