These days it takes some star power to get some good causes noticed, and both Hillary Clinton and Ben Affleck are lending some of theirs to help prevent childhood deaths. Clinton and Affleck made appearances at a two-day conference Wednesday, along with about 700 other government and private sector leaders. The Call To Action for Child Survival gathering is being held at Georgetown University. More than 7.5 million children die under the age of five die each year. The idea is to eradicate the causes of preventable death like malaria.