Gathered at the end of the second day of the UN General Assembly in New York, Christy Turlington Burns, 50 Cent, Jennifer Connelly, Dikembe Mutombo, Yvonne Chaka Chaka, Alexis Bledel, and influential bloggers @Dooce and @Christinemosler signed up to Save the Children’s campaign to save children’s lives by investing in healthworkers around the world. The support marks ‘positive steps…