Witness: Witness Archive 2017

In 1995, a Christian campaign started in America to encourage teenagers to promise not to have sex before marriage. It was known as the Silver Ring Thing - and it soon caught on across the country. Lucy Burns has been speaking to its founder, Denny Pattyn. (Photo: A member of the Silver Ring Thing arrives at Holy Trinity Church in Claygate, England, 2004. Credit: Ian Waldie/Getty Images)