Brad Pitt and Angelina Jolie are stepping up efforts to aid people in need in their son's home country of Cambodia. The celebrity couple visited the homeland of their son MADDOX, five, in November (06) and are working to expand the scope of the MADDOX JOLIE-PITT project (MJP), which Jolie launched more than four years ago as a conservation initiative. The two have donated millions of dollars and teamed up with DR JEFFREY SACHS and his anti-poverty organisation Millennium Promise on an economic-development program in northwestern Cambodia. Seventy MJP workers will work with Sach's group on activities including rice planting, distribution of beds to fight malaria, school meal programs and providing medicine for clinics. Jolie tells American publication People, "We have learned so much and I think we are on the right track. We hope people will travel to Cambodia. The people there have overcome so much." Pitt adds, "It was incredibly moving to visit my son's country."