If there's a threat from a new contagious disease – SARs, Bird Flu, Ebola – it makes the world's headlines. What doesn't make the headlines are the six thousand children who die every day from preventable illnesses caused by dirty water and poor sanitation. That's the equivalent of a jumbo jet crashing every hour. The international community is still committed to cutting by half the number of people without proper sanitation, and there's only ten years left to reach the target. In preparation for the New York Commission on Sustainable Development, ministers and experts from all over the world descended on Dakar, the capital of Senegal, with a commitment to making ours a cleaner world. Earth Report persuaded some of the delegates to participate in a debate that gives us an insight into how we might tackle the child that stalks our world.