the u.s. defense secretary says that president obama is considering direct action on the ground there. we will take you inside the administration's thinking on iraq with deputy secretary of state. then, it's one year and one week until the election. all eyes already on the polls. what do they lareally tell us a will today's front-runners be tomorrow's nominees. also from one child to to. china changes decades of policy. it's hoping to grow its economy by growing its family. will it work? one of the world's most famous scientists on dr. ben carson's rejection of the theory of evolution. >> this is not something you believe in or not. it's fact.