"'Given this natural aversion to human waste, it takes rigorous research, careful implementation and skillful social marketing to overcome the ‘yuck’ factor,' says Kramer. 'That said, we found that, in Haiti, once people are able to see, smell and touch the final product they are more than eager to....

"It's a modern-day alchemy that is, on a small scale at least, helping Haitians turn something deadly into something valuable. 'If we can take all the poop that's making people sick right now," said Dr Sasha Kramer as she stuck a thermometer into a large mound of faecal waste in the middle of....