The Slavery Footprint shines a light on the human cost of your level of consumerism. You take a quick survey, and it calculates from your style of living how many people in your supply chain are enslaved. The survey’s not perfect – there’s no room to recognise what might have been second-hand or fair trade, but by golly it is interesting. And it does make you think. Take a few minutes this Monday morning and find out the answer to,