Rap mogul JAY-Z is teaming up with MTV and United Nations (UN) Secretary-General Kofi Annan in promoting a new scheme to educate the American public on the world's water crisis. The Def Jam Records boss - real name SHAWN CARTER - will join Annan and MTV president CHRISTINA NORMAN at the UN headquarters building in New York City on Wednesday (09AUG06). Jay-Z is also filming an MTV documentary which will follow him as he discovers the human cost of the current water shortage. Details about the documentary will also be revealed on Wednesday.